Merge origin/master

assignments/src/MV3500Cohort2021JulySeptember/homework3/Frank/FrankAssignment3Simulation.java

+/**
+ * Copyright (c) 2008-2021, MOVES Institute, Naval Postgraduate School (NPS). All rights reserved.
+ * This work is provided under a BSD open-source license, see project license.html and license.txt
+ *
+ *
+ */
+package MV3500Cohort2021JulySeptember.homework3.Frank;
+
+import edu.nps.moves.dis7.enumerations.Country;
+import edu.nps.moves.dis7.enumerations.EntityKind;
+import edu.nps.moves.dis7.enumerations.MunitionDescriptorFuse;
+import edu.nps.moves.dis7.enumerations.PlatformDomain;
+import edu.nps.moves.dis7.enumerations.VariableRecordType;
+import edu.nps.moves.dis7.pdus.CommentPdu;
+import edu.nps.moves.dis7.pdus.CommentReliablePdu;
+import edu.nps.moves.dis7.pdus.Domain;
+import edu.nps.moves.dis7.pdus.EntityID;
+import edu.nps.moves.dis7.pdus.EntityStatePdu;
+import edu.nps.moves.dis7.pdus.EntityType;
+import edu.nps.moves.dis7.pdus.EulerAngles;
+import edu.nps.moves.dis7.pdus.FirePdu;
+import edu.nps.moves.dis7.pdus.MunitionDescriptor;
+import edu.nps.moves.dis7.pdus.Pdu;
+import edu.nps.moves.dis7.pdus.Vector3Double;
+import edu.nps.moves.dis7.utilities.CoordinateConversions;
+import edu.nps.moves.dis7.utilities.DisThreadedNetworkInterface;
+import edu.nps.moves.dis7.utilities.PduFactory;
+import edu.nps.moves.dis7.utilities.stream.PduRecorder;
+import java.util.ArrayList;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * The purpose of this program is to have M1Abrams Destroy A Russian T62 Tank. 
+ * simulation program that includes DIS-capable entities doing tasks and
+ * reporting them to the network. Default settings include PDU recording turned
+ * on by default.
+ */
+public class FrankAssignment3Simulation {
+
+    private EntityID createM1Abrams() {
+        EntityID M1AbramsID = new EntityID(); // 1.1.225.1.1.1 Platform,Ground,USA,ArmoredFightingVehicle M1 Abrams
+        M1AbramsID.setSiteID(1);
+        M1AbramsID.setApplicationID(13);
+        M1AbramsID.setEntityID(25);
+        return M1AbramsID;
+    }
+
+    private EntityType createM1AbramsType() {
+        EntityType M1AbramsType = new EntityType();
+        M1AbramsType.setEntityKind(EntityKind.PLATFORM);
+        M1AbramsType.setDomain(Domain.inst(PlatformDomain.LAND));
+        M1AbramsType.setCountry(Country.UNITED_STATES_OF_AMERICA_USA);
+        M1AbramsType.setCategory(1);
+        M1AbramsType.setSubCategory(1);
+        M1AbramsType.setSpecific(1);
+        return M1AbramsType;
+    }
+
+    private Vector3Double createLocationVector() {
+        Vector3Double eloc2 = new Vector3Double();
+        double[] loc2 = CoordinateConversions.getXYZfromLatLonDegrees(36.599831, -121.878842, 0); //sloat delmonte intersection
+        eloc2.setX(loc2[0]);
+        eloc2.setY(loc2[1]);
+        eloc2.setZ(loc2[2]);
+        return eloc2;
+    }
+
+    private EulerAngles createOrientation() {
+        EulerAngles orient2 = new EulerAngles();
+        orient2.setPhi((float) 0.0);
+        orient2.setPsi((float) 0.0);
+        orient2.setTheta((float) 0.0);
+        return orient2;
+    }
+
+    private EntityID createT62ID() {
+        EntityID T62ID = new EntityID();//1.1.45.1.7.1 Platform,Ground,China, Tank, T-62
+        T62ID.setSiteID(1);
+        T62ID.setApplicationID(13);
+        T62ID.setEntityID(2);
+
+        return T62ID;
+    }
+
+    private EntityType createT62Type() {
+
+        EntityType T62Type = new EntityType();
+        T62Type.setEntityKind(EntityKind.PLATFORM);
+        T62Type.setDomain(Domain.inst(PlatformDomain.LAND));
+        T62Type.setCountry(Country.RUSSIA);
+        T62Type.setCategory(2);
+        T62Type.setSubCategory(41);
+        T62Type.setSpecific(3);
+        return T62Type;
+    }
+
+    private Vector3Double createEnemyLocation() {
+        Vector3Double eloc1 = new Vector3Double();
+        double[] loc1 = CoordinateConversions.getXYZfromLatLonDegrees(36.594116, -121.877463, 0); //NPS Main Gate
+        eloc1.setX(loc1[0]);
+        eloc1.setY(loc1[1]);
+        eloc1.setZ(loc1[2]);
+        return eloc1;
+    }
+
+    private EulerAngles createEnemyOrientation() {
+        EulerAngles orient1 = new EulerAngles();
+        orient1.setPhi((float) 3.1415);
+        orient1.setPsi((float) 0.0);
+        orient1.setTheta((float) 0.0);
+        return orient1;
+    }
+    
+   private MunitionDescriptor createM829IT(){
+           
+    EntityType M829Type = new EntityType(); //2.2.225.2.13.1
+            M829Type.setEntityKind(EntityKind.MUNITION);
+            M829Type.setDomain(Domain.inst(PlatformDomain.AIR));
+            M829Type.setCountry(Country.UNITED_STATES_OF_AMERICA_USA);
+            M829Type.setCategory(2);
+            M829Type.setSubCategory(13);
+            M829Type.setSpecific(1);
+            MunitionDescriptor M829IT = new MunitionDescriptor();
+            M829IT.setMunitionType(M829Type);
+            M829IT.setQuantity(3);
+            M829IT.setFuse(MunitionDescriptorFuse.CONTACT_GRAZE);
+            M829IT.setRate(200);
+   return M829IT;
+   }
+    /**
+     * This runSimulation() method is for you, a programmer-modifiable method
+     * for defining and running a new simulation of interest. Welcome! Other
+     * parts of this program handle bookkeeping and plumbing tasks so that you
+     * can focus on your model entities and activities. Expandable support
+     * includes DIS EntityStatePdu, FirePdu and CommentPdu all available for
+     * modification and sending in a simulation loop. Continuous improvement
+     * efforts seek to make this program as easy and straightforward as possible
+     * for DIS simulationists to use and adapt. All of the other methods are
+     * setup, teardown and configuration that you may find interesting, even
+     * helpful, but don't really have to worry about.
+     */
+    @SuppressWarnings("SleepWhileInLoop") // yes we do that
+    public void runSimulation() {
+        try {
+            /**
+             * seconds for real-time execution (not simulation time, which may
+             * or may not be the same)
+             */
+            final double SIMULATION_LOOP_DURATION_SECONDS = 2.0;
+            final int SIMULATION_MAX_LOOP_COUNT = 10; // be deliberate out out there!  also avoid infinite loops.
+            int simulationLoopCount = 0;        // variable, initialized at 0
+            boolean simulationComplete = false;     // sentinel variable as termination condition,, are we done yet?
+            boolean fireBool = false;
+            boolean destBool = false;
+            
+            EntityID entityID_1 = new EntityID();
+            entityID_1.setSiteID(1).setApplicationID(2).setEntityID(3); // made-up example ID; 
+            // TODO someday, use enumerations; is there a unique site triplet for MOVES Institute?
+
+            EntityStatePdu entityStatePdu_1 = pduFactory.makeEntityStatePdu();
+            entityStatePdu_1.setEntityID(entityID_1);
+            // M1Abrams 
+            entityStatePdu_1.setEntityID(createM1Abrams()); // Calling createM1Abrams Method
+            entityStatePdu_1.setEntityType(createM1AbramsType()); // Calling createM1AbramsType Method
+            // Location and Orientation 
+            Vector3Double eloc2 = createLocationVector(); // Calling createLocationVector Method
+            entityStatePdu_1.setEntityLocation(eloc2);
+            entityStatePdu_1.setEntityOrientation(createOrientation()); // Calling Create Orientation Method
+
+            EntityStatePdu entityStatePdu2 = pduFactory.makeEntityStatePdu();
+//          //T-62 
+            entityStatePdu2.setEntityID(createT62ID()); // Calling Create T62 ID method
+            entityStatePdu2.setEntityType(createT62Type()); // Calling Create T62 Type method
+            // enemy location and orientation 
+            Vector3Double eloc1 = createEnemyLocation(); // calling create enemylocation method
+            entityStatePdu2.setEntityLocation(eloc1); // Setting em
+            entityStatePdu2.setEntityOrientation(createEnemyOrientation()); //calling create Enemy orientation method
+
+            int T62HitsReceived = 0;
+
+            System.out.println(eloc2.toString());
+            System.out.println(eloc1.toString());
+
+            //FirePdu firePduNull = new FirePdu();
+            FirePdu firePdu = pduFactory.makeFirePdu();
+            EntityID fireID = new EntityID();
+            fireID.setSiteID(1);
+            fireID.setApplicationID(13);
+            fireID.setEntityID(25);
+            EntityID targetID = new EntityID();
+            targetID.setSiteID(1);
+            targetID.setApplicationID(13);
+            targetID.setEntityID(2);
+
+            firePdu.setFiringEntityID(fireID);
+            firePdu.setTargetEntityID(targetID);
+
+            firePdu.setDescriptor(createM829IT()); // calling create M829IT Method
+            
+            EntityID M829ID = new EntityID();
+            M829ID.setEntityID(1);
+            firePdu.setMunitionExpendibleID(M829ID);
+
+          
+            CommentReliablePdu T62DestroyedComment = pduFactory.makeCommentReliablePdu("T62 DESTROYED BY M1 Abrams AFTER 2 rounds M829I-T ON TARGET");
+            CommentReliablePdu T62SightedComment = pduFactory.makeCommentReliablePdu("M1 Abrams Acquires Target - T62 with in firing distance");
+            //if(eloc1.getX())
+            EntityID MTVRID = new EntityID();
+
+            FirePdu firePdu_1a = pduFactory.makeFirePdu(); // for entity 1 first  weapon (if any)
+
+            while (simulationLoopCount < SIMULATION_MAX_LOOP_COUNT) // are we done yet?
+            {
+                simulationLoopCount++; // good practice: increment loop counter as first action in that loop
+                // Where is my entity?
+                entityStatePdu_1.getEntityLocation().setX(entityStatePdu_1.getEntityLocation().getX() - 20); // 1m per timestep
+                entityStatePdu_1.getEntityLocation().setY(entityStatePdu_1.getEntityLocation().getY() - 75);
+                // decide whether to fire, and then update the firePdu.  Hmmm, you might want a target to shoort at!
+                Double dx = eloc2.getX() - eloc1.getX();
+                Double dy = eloc2.getY() - eloc1.getY();
+                Double dz = eloc2.getZ() - eloc1.getZ();
+                Double range = Math.sqrt(dx * dx + dy * dy);
+                System.out.println("range" + range + "                dx:" + dx + "        dy:" + dy);
+
+                if (range < 100) { // Range 100
+                    if (!fireBool) {
+                        sendSinglePdu(T62SightedComment);
+                    }
+                    fireBool = true;
+                    System.out.println("Entity#" + firePdu.getFiringEntityID().getEntityID() + " is firing " + firePdu.getDescriptor().getMunitionType().getDomain() + "." + firePdu.getDescriptor().getMunitionType().getCountry() + "." + firePdu.getDescriptor().getMunitionType().getCategory() + "." + firePdu.getDescriptor().getMunitionType().getSubCategory() + "." + firePdu.getDescriptor().getMunitionType().getSpecific() + "." + " at Entity#" + firePdu.getTargetEntityID().getEntityID());
+
+                    if (firePdu.getTargetEntityID().getEntityID() == 2) {
+                        T62HitsReceived += 1;
+                        if (T62HitsReceived > 1) {
+                            // The M1 destroyst the T62
+
+                            System.out.println("M1 Abrams destroys T62 after " + T62HitsReceived + "rounds hit T62 Russian Tank");
+                            narrativeMessage4 = "Destroyed T62";
+                            destBool = true;
+                            simulationComplete = true;
+
+                        }
+                    }
+                }
+
+        
+                if (simulationLoopCount > 4) // for example
+                {
+                    simulationComplete = true;
+                }
+                
+                entityStatePdu_1.getEntityLocation().setX(entityStatePdu_1.getEntityLocation().getX() + 1.0); // 1m per timestep
+
+                narrativeMessage1 = "MV3500 FrankAssignment3Simulation";
+                narrativeMessage2 = "runSimulation() loop " + simulationLoopCount;
+                narrativeMessage3 = ""; // intentionally blank for testing
+
+                // your loop termination condition goes here
+                if (simulationLoopCount > 10) // for example
+                {
+                    simulationComplete = true;
+                }
+                // =============================================================================================
+                // * your own simulation code is finished here! *
+                // =============================================================================================
+
+                // staying synchronized with timestep: wait duration for elapsed time in this loop
+                // Thread.sleep needs a (long) parameter for milliseconds, which are clumsy to use sometimes
+                Thread.sleep((long) (SIMULATION_LOOP_DURATION_SECONDS * 1000)); // seconds * (1000 msec/sec) = milliseconds
+                System.out.println("... [Pausing for " + SIMULATION_LOOP_DURATION_SECONDS + " seconds]");
+
+                // OK now send the status PDUs for this loop, and then continue
+                System.out.println("sending PDUs for simulation step " + simulationLoopCount + ", monitor loopback to confirm sent");
+                sendAllPdusForLoopTimestep(entityStatePdu_1, firePdu_1a, timeStepComment, narrativeMessage1, narrativeMessage2, narrativeMessage3);
+                System.out.println("... [PDUs successfully sent for this loop]");
+
+                // ===============================
+                // loop now finished, check whether to terminate if simulation complete, otherwise continue
+                if (simulationComplete || (simulationLoopCount > 10000)) // for example; including fail-safe condition is good
+                {
+                    System.out.println("... [Termination condition met, simulationComplete=" + simulationComplete + "]"); // ", final loopCount=" + loopCount + 
+                    break;
+                }
+            }   // end of simulation loop
+
+            narrativeMessage2 = "runSimulation() completed successfully"; // all done
+            sendCommentPdu(narrativeComment, narrativeMessage1, narrativeMessage2, narrativeMessage3);
+            System.out.println("... [final CommentPdu successfully sent for simulation]");
+            // TODO simulation management PDUs
+        } catch (InterruptedException iex) // handle any exception that your code might choose to provoke!
+        {
+            Logger.getLogger(FrankAssignment3Simulation.class.getName()).log(Level.SEVERE, null, iex);
+
+        } catch (Exception ex) {
+        }
+
+        /* **************************** infrastructure code, modification is seldom needed ************************* */
+    }
+    private boolean verboseComments = true;
+    String narrativeMessage1 = new String();
+    String narrativeMessage2 = new String();
+    String narrativeMessage3 = new String();
+    String narrativeMessage4 = new String();
+
+    /* VariableRecordType enumerations have potential use with CommentPdu logs */
+ /* TODO contrast to EntityType */
+    VariableRecordType descriptionComment = VariableRecordType.DESCRIPTION;
+    VariableRecordType narrativeComment = VariableRecordType.COMPLETE_EVENT_REPORT;
+    VariableRecordType statusComment = VariableRecordType.APPLICATION_STATUS;
+    VariableRecordType timeStepComment = VariableRecordType.APPLICATION_TIMESTEP;
+    VariableRecordType otherComment = VariableRecordType.OTHER;
+
+    /**
+     * Output prefix to identify this class, helps with logging
+     */
+    private final static String TRACE_PREFIX = "[" + FrankAssignment3Simulation.class.getName() + "] ";
+
+    // class variables
+    PduFactory pduFactory = new PduFactory();
+    DisThreadedNetworkInterface disNetworkInterface;
+    DisThreadedNetworkInterface.PduListener pduListener;
+    Pdu receivedPdu;
+
+    static final String NETWORK_ADDRESS_DEFAULT = "239.1.2.3";
+    static final int NETWORK_PORT_DEFAULT = 3000;
+    static String networkAddress = NETWORK_ADDRESS_DEFAULT;
+    static int networkPort = NETWORK_PORT_DEFAULT;
+
+    /**
+     * Constructor design goal: additional built-in initialization conveniences
+     * can go here to keep student efforts focused on the runSimulation()
+     * method.
+     */
+    public FrankAssignment3Simulation() {
+        // Constructor is under consideration.  Constructor is not currently needed.
+    }
+
+    /**
+     * Utility Constructor that allows your example simulation program to
+     * override default network address and port
+     *
+     * @param address network address to use
+     * @param port corresponding network port to use
+     */
+    public FrankAssignment3Simulation(String address, int port) {
+        setNetworkAddress(address);
+
+        setNetworkPort(port);
+    }
+
+    /**
+     * @return the networkAddress
+     */
+    public String getNetworkAddress() {
+        return networkAddress;
+    }
+
+    /**
+     * @param newNetworkAddress the networkAddress to set
+     */
+    public final void setNetworkAddress(String newNetworkAddress) {
+        FrankAssignment3Simulation.networkAddress = newNetworkAddress;
+    }
+
+    /**
+     * @return the networkPort
+     */
+    public int getNetworkPort() {
+        return networkPort;
+    }
+
+    /**
+     * @param newNetworkPort the networkPort to set
+     */
+    public final void setNetworkPort(int newNetworkPort) {
+        FrankAssignment3Simulation.networkPort = newNetworkPort;
+    }
+
+    /**
+     * Initialize network interface, choosing best available network interface
+     */
+    public void setUpNetworkInterface() {
+        disNetworkInterface = new DisThreadedNetworkInterface(getNetworkAddress(), getNetworkPort());
+
+        System.out.println("Network confirmation:"
+                + " address=" + disNetworkInterface.getAddress()
+                + //  disNetworkInterface.getMulticastGroup() + 
+                " port=" + disNetworkInterface.getPort());   // + disNetworkInterface.getDisPort());
+        pduListener = new DisThreadedNetworkInterface.PduListener() {
+            /**
+             * Callback handler for listener
+             */
+            @Override
+            public void incomingPdu(Pdu newPdu) {
+                receivedPdu = newPdu;
+            }
+        };
+        disNetworkInterface.addListener(pduListener);
+    }
+
+    /**
+     * All done, release network resources
+     */
+    public void tearDownNetworkInterface() {
+        disNetworkInterface.removeListener(pduListener);
+
+        disNetworkInterface.close();
+//      disNetworkInterface.kill(); // renamed as close(), deprecated
+//      disNetworkInterface = null; // making sure no possibility of zombie process remaining...
+    }
+
+    /**
+     * Send a single Protocol Data Unit (PDU) of any type
+     *
+     * @param pdu the pdu to send
+     */
+    public void sendSinglePdu(Pdu pdu) {
+        try {
+            disNetworkInterface.send(pdu);
+            Thread.sleep(100); // TODO consider refactoring the wait logic and moving externally
+        } catch (InterruptedException ex) {
+            System.err.println(this.getClass().getName() + " Error sending PDU: " + ex.getLocalizedMessage());
+            System.exit(1);
+        }
+    }
+
+    /**
+     * Send Comment PDU
+     *
+     * @see
+     * <a href="https://docs.oracle.com/javase/tutorial/java/javaOO/arguments.html">Passing
+     * Information to a Method or a Constructor</a> Arbitrary Number of
+     * Arguments
+     * @param commentType enumeration value describing purpose of the narrative
+     * comment
+     * @param comments String array of narrative comments
+     */
+    public void sendCommentPdu(VariableRecordType commentType,
+            // vararg... variable-length set of String comments can optionally follow
+            String... comments) {
+        sendAllPdusForLoopTimestep(null, null, commentType, comments);
+    }
+
+    /**
+     * Send EntityState, Fire, Comment PDUs that got updated for this loop,
+     * reflecting state of current simulation timestep.
+     *
+     * @see
+     * <a href="https://docs.oracle.com/javase/tutorial/java/javaOO/arguments.html">Passing
+     * Information to a Method or a Constructor</a> Arbitrary Number of
+     * Arguments
+     * @param entityStatePdu the ESPDU to send, if any
+     * @param firePdu the FirePDU to send, if any
+     * @param commentType enumeration value describing purpose of the narrative
+     * comment
+     * @param comments String array of narrative comments
+     */
+    public void sendAllPdusForLoopTimestep(EntityStatePdu entityStatePdu,
+            FirePdu firePdu,
+            VariableRecordType commentType,
+            // vararg... variable-length set of String comments can optionally follow
+            String... comments) {
+        if (entityStatePdu != null) {
+            sendSinglePdu(entityStatePdu);
+        }
+
+        if (firePdu != null) {
+            sendSinglePdu(firePdu); // bang
+        }
+        if ((comments != null) && (comments.length > 0)) {
+            ArrayList<String> newCommentsList = new ArrayList<>();
+            for (String comment : comments) {
+                if (!comment.isEmpty()) {
+                    newCommentsList.add(comment); // OK found something to send
+                }
+            }
+            if (!newCommentsList.isEmpty()) {
+                if (commentType == null) {
+                    commentType = otherComment; // fallback value otherComment
+                }                // now build the commentPdu from these string inputs, thus constructing a narrative entry
+                CommentPdu commentPdu = pduFactory.makeCommentPdu(commentType, newCommentsList.toArray(new String[0])); // comments);
+                sendSinglePdu(commentPdu);
+                if (isVerboseComments()) {
+                    System.out.println("*** [Narrative comment sent: " + commentType.name() + "] " + newCommentsList.toString());
+                }
+            }
+        }
+    }
+
+    /**
+     * Main method is first executed when a program instance is loaded.
+     *
+     * @see
+     * <a href="https://docs.oracle.com/javase/tutorial/getStarted/application/index.html">Java
+     * Tutorials: A Closer Look at the "Hello World!" Application</a>
+     * @param args command-line arguments are an array of optional String
+     * parameters that are passed from execution environment during invocation
+     */
+    public static void main(String[] args) {
+        System.out.println(TRACE_PREFIX + "started...");
+
+        FrankAssignment3Simulation thisProgram = new FrankAssignment3Simulation(); // creates instance
+
+        // initial execution: can handle args array of initialization arguments here
+        if (args.length == 2) {
+            if ((args[0] != null) && !args[0].isEmpty()) {
+                thisProgram.setNetworkAddress(args[0]);
+            }
+
+            if ((args[1] != null) && !args[1].isEmpty()) {
+                thisProgram.setNetworkPort(Integer.parseInt(args[1]));
+            }
+        } else if (args.length != 0) {
+            System.err.println("Usage: " + thisProgram.getClass().getName() + " [address port]");
+            System.exit(-1);
+        }
+        // OK here we go...
+
+        thisProgram.setUpNetworkInterface();
+
+        String DEFAULT_OUTPUT_DIRECTORY = "./pduLog";
+        String outputDirectory = DEFAULT_OUTPUT_DIRECTORY;
+        System.out.println("Beginning pdu save to directory " + outputDirectory);
+        PduRecorder pduRecorder = new PduRecorder(outputDirectory, networkAddress, networkPort); // assumes save
+
+        thisProgram.runSimulation(); // ... your simulation execution code goes in there ...
+
+        pduRecorder.stop();
+
+        thisProgram.tearDownNetworkInterface(); // make sure no processes are left lingering
+
+        System.out.println(TRACE_PREFIX + "complete."); // report successful completion
+    }
+
+    /**
+     * @return whether verboseComments mode is enabled
+     */
+    public boolean isVerboseComments() {
+        return verboseComments;
+    }
+
+    /**
+     * @param newVerboseComments whether verboseComments mode is enabled
+     */
+    public void setVerboseComments(boolean newVerboseComments) {
+        this.verboseComments = newVerboseComments;
+    }
+}

assignments/src/MV3500Cohort2021JulySeptember/homework3/Frank/README.md

+## Homework 3: Example Simulation Recording OpenDIS Network Streams
+
+### Assignment
+
+* Adapt the functionality for [OpenDIS ExampleSimulationProgram](../../../../examples/src/OpenDis7Examples/ExampleSimulationProgram.java), modifying provided code
+* Result streams are recorded/saved/replayed using Wireshark or X3D-Edit.
+
+This assignment  presents a Problem Prototyping opportunity.
+While some minimal functionality is expected, the general outline of
+a networking problem and proposed solution holds great interest.
+Think of it as a warmup preparation for your final project.
+
+This is also a freeplay opportunity. 
+ You have the option to pick one or more of the provided course example programs 
+and adapt the source to demonstrate a new client-server handshake protocol of interest.
+
+Be sure to provide a rationale that justifies why the networking choices you made
+(TCP/UDP, unicast/multicast, etc.) are the best for the problem you are addressing.
+
+Refer to [homework2 README](../homework2/README.md) and [assignments README](../../../README.md)
+for further details on what specific deliverables are expected in each homework assignment.
+
+Team efforts are encouraged, though if you choose a team approach be sure to justify why.
+This is a good warmup prior to final projects. Have fun with Java networking!
+
+### Prior Assignment, August 2019
+
+In 2019, students worked together on a single project to check wireless multicast connectivity recently deployed on NPS campus.  
+
+See their experimental results in the [NPS Multicast Connectivity Report](../../MV3500Cohort2019JulySeptember/homework3).
+

presentations/01_README_LVC.md

@@ -15,7 +15,7 @@ This interesting question broadens and deepens steadily as capabilities make pro
 3. MEU Amphibious Landing Beach Operations Group 
 4. Any "live fire" attack, in training 
 5. Infantry Immersion Trainer (IIT)
-6. Cyber training: red vs. blue team link: https://www.csoonline.com/article/2122440/emergency-preparedness-red-team-versus-blue-team-how-to-run-an-effective-simulation.html
+6. Cyber training: [red vs. blue team](https://www.csoonline.com/article/2122440/emergency-preparedness-red-team-versus-blue-team-how-to-run-an-effective-simulation.html)
 7. (Your Example Here)