diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/EspduTerminalLog.txt b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/EspduTerminalLog.txt
deleted file mode 100644
index 4dba55c8530bae5461a83ec84f731824570291d1..0000000000000000000000000000000000000000
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/EspduTerminalLog.txt
+++ /dev/null
@@ -1,136 +0,0 @@
-Invocation instructions:
-1. run/debug EspduReceiver.java (since sender does not block, first be ready to listen)
-2. run/debug EspduSender.java
-
-Program responses, sender and receiver:
-
-===================================================
-run:
-
-
-DisExamplesOpenDis7.EspduSender started...
-Sending 5 sets of packets:
-===============
-Create new PDUs
- latitude, longitude: [36.595517, -121.87693999999999]
- coordinate conversion: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-Espdu #0 entityID=[1,2,3]
-Sending espdu datagram packet to /127.255.255.255
-Sending fire datagram packet to /127.255.255.255
-Sending espdu datagram packet to /172.20.221.218
-Sending fire datagram packet to /172.20.221.218
-Sending espdu datagram packet to /10.0.0.255
-Sending fire datagram packet to /10.0.0.255
-===============
-Create new PDUs
- latitude, longitude: [36.595517, -121.877]
- coordinate conversion: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-Espdu #1 entityID=[1,2,3]
-Sending espdu datagram packet to /127.255.255.255
-Sending fire datagram packet to /127.255.255.255
-Sending espdu datagram packet to /172.20.221.218
-Sending fire datagram packet to /172.20.221.218
-Sending espdu datagram packet to /10.0.0.255
-Sending fire datagram packet to /10.0.0.255
-===============
-Create new PDUs
- latitude, longitude: [36.595517, -121.87693999999999]
- coordinate conversion: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-Espdu #2 entityID=[1,2,3]
-Sending espdu datagram packet to /127.255.255.255
-Sending fire datagram packet to /127.255.255.255
-Sending espdu datagram packet to /172.20.221.218
-Sending fire datagram packet to /172.20.221.218
-Sending espdu datagram packet to /10.0.0.255
-Sending fire datagram packet to /10.0.0.255
-===============
-Create new PDUs
- latitude, longitude: [36.595517, -121.877]
- coordinate conversion: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-Espdu #3 entityID=[1,2,3]
-Sending espdu datagram packet to /127.255.255.255
-Sending fire datagram packet to /127.255.255.255
-Sending espdu datagram packet to /172.20.221.218
-Sending fire datagram packet to /172.20.221.218
-Sending espdu datagram packet to /10.0.0.255
-Sending fire datagram packet to /10.0.0.255
-===============
-Create new PDUs
- latitude, longitude: [36.595517, -121.87693999999999]
- coordinate conversion: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-Espdu #4 entityID=[1,2,3]
-Sending espdu datagram packet to /127.255.255.255
-Sending fire datagram packet to /127.255.255.255
-Sending espdu datagram packet to /172.20.221.218
-Sending fire datagram packet to /172.20.221.218
-Sending espdu datagram packet to /10.0.0.255
-Sending fire datagram packet to /10.0.0.255
-===============
-DisExamplesOpenDis7.EspduSender complete.
-BUILD SUCCESSFUL (total time: 8 seconds)
-
-===================================================
-
-DisExamplesOpenDis7.EspduReceiver started...
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707492.9269245286, -4353663.899966802, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-===============
-received PDU type 1=ENTITY_STATE edu.nps.moves.dis7.EntityStatePdu
- entityID triplet: [1, 2, 3]
- Location in DIS coordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-received PDU type 2=FIRE edu.nps.moves.dis7.FirePdu
- FirePdu locationInWorldCoordinates: [-2707488.3677768684, -4353666.735244378, 3781450.3202754413]
-
-===================================================
\ No newline at end of file
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduListenerSaver.java b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduListenerSaver.java
deleted file mode 100644
index 4fc9370b799f10ac9eeeccf09731b83928b7ba8b..0000000000000000000000000000000000000000
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduListenerSaver.java
+++ /dev/null
@@ -1,82 +0,0 @@
-/**
- * Copyright (c) 2008-2019, MOVES Institute, Naval Postgraduate School. All rights reserved.
- * This work is licensed under the BSD open source license, available at https://www.movesinstitute.org/licenses/bsd.html
- */
-package MV3500Cohort2019JulySeptember.homework4.Yurkovich;
-
-import edu.nps.moves.dis7.util.playerrecorder.Recorder;
-import java.io.IOException;
-import java.util.Scanner;
-
-/**
- * PduSaver.java created on Aug 21, 2019
- * MOVES Institute Naval Postgraduate School, Monterey, CA, USA www.nps.edu
- *
- * @author Mike Bailey, jmbailey@nps.edu
- * @version $Id$
- */
-public class PduListenerSaver
-{
- private final static String DEFAULT_OUTPUTDIR = "./pduLog";
- private final static String MCAST_ADDR = "239.1.2.3";
- private final static int DIS_PORT = 3000;
-
- private enum mystate
- {
- RUNNING,
- PAUSED;
- }
-
- public static void main(String[] args)
- {
- String outDir = DEFAULT_OUTPUTDIR;
- String mcast = MCAST_ADDR;
- int port = DIS_PORT;
-
- switch (args.length) {
- case 0:
- break;
- case 1:
- outDir = args[0];
- break;
- case 3:
- outDir = args[0];
- mcast = args[1];
- port = Integer.parseInt(args[2]);
- break;
- default:
- System.err.println("Usage: PduListener() or PduListener(\"outputdir\") or PduListener(\"outputdir\",\"multicast address\", ipPort");
- System.exit(1);
- }
-
- System.out.println("Beginning pdu save to directory " + outDir);
- try {
- Recorder recorder = new Recorder(outDir, mcast, port);
-
- recorder.startResume();
- mystate state = mystate.RUNNING;
- Scanner scan = new Scanner(System.in);
-
- while (true) {
- System.out.println("Type p/enter to pause, r/enter to resume, q/enter to quit");
- String line = scan.nextLine();
- if (line.equalsIgnoreCase("p") && state == mystate.RUNNING) {
- recorder.stopPause();
- state = mystate.PAUSED;
- }
- else if (line.equalsIgnoreCase("r") && state == mystate.PAUSED) {
- recorder.startResume();
- state = mystate.RUNNING;
- }
- else if (line.equalsIgnoreCase("q")) {
- recorder.end();
- break;
- }
- }
- System.out.println("Ending pdu save to "+recorder.getLogFile());
- }
- catch (IOException ex) {
- System.err.println("Exception: " + ex.getClass().getSimpleName() + ": " + ex.getLocalizedMessage());
- }
- }
-}
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduReaderPlayer.java b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduReaderPlayer.java
deleted file mode 100644
index 62f917bd55fb301ef7671fc1d3793c708c232eb4..0000000000000000000000000000000000000000
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduReaderPlayer.java
+++ /dev/null
@@ -1,86 +0,0 @@
-/**
- * Copyright (c) 2008-2019, MOVES Institute, Naval Postgraduate School. All rights reserved.
- * This work is licensed under the BSD open source license, available at https://www.movesinstitute.org/licenses/bsd.html
- */
-package MV3500Cohort2019JulySeptember.homework4.Yurkovich;
-
-import edu.nps.moves.dis7.util.playerrecorder.Player;
-import java.io.File;
-import java.io.IOException;
-import java.util.Scanner;
-
-/**
- * PduSaver.java created on Aug 21, 2019
- * MOVES Institute Naval Postgraduate School, Monterey, CA, USA www.nps.edu
- *
- * @author Mike Bailey, jmbailey@nps.edu
- * @version $Id$
- */
-public class PduReaderPlayer
-{
- private final static String DEFAULT_OUTPUTDIR = "pduLog";
- private final static String MCAST_ADDR = "239.1.2.3";
- private final static int DIS_PORT = 3000;
-
- private enum mystate
- {
- RUNNING,
- PAUSED;
- }
-
- public static void main(String[] args)
- {
- String outDir = DEFAULT_OUTPUTDIR;
- String mcast = MCAST_ADDR;
- int port = DIS_PORT;
-
- System.out.println("DisExamplesOpenDis7.PduReaderPlayer started...");
-
- switch (args.length) {
- case 0:
- break;
- case 1:
- outDir = args[0];
- break;
- case 3:
- outDir = args[0];
- mcast = args[1];
- port = Integer.parseInt(args[2]);
- break;
- default:
- System.err.println("Usage: PduReaderPlayer() or PduReaderPlayer(\"outputdir\") or PduReaderPlayer(\"outputdir\",\"multicast address\", ipPort");
- System.exit(1);
- }
-
- System.out.println("Beginning pdu playback from directory " + outDir);
- try {
- Player player = new Player(mcast, port, new File(outDir).toPath());
- player.startResume();
- mystate state = mystate.RUNNING;
- Scanner scan = new Scanner(System.in);
-
- while (true) {
- System.out.println("Type p/enter to pause, r/enter to resume, q/enter to quit");
- String line = scan.nextLine();
- if (line.equalsIgnoreCase("p") && state == mystate.RUNNING) {
- player.stopPause();
- state = mystate.PAUSED;
- }
- else if (line.equalsIgnoreCase("r") && state == mystate.PAUSED) {
- player.startResume();
- state = mystate.RUNNING;
- }
- else if (line.equalsIgnoreCase("q")) {
- player.end();
- break;
- }
- }
- System.out.println("Ending pdu files playback for directory " + outDir);
- System.out.println("DisExamplesOpenDis7.PduReaderPlayer complete.");
- System.exit(0); // not sure why this is necessary with Netbeans...
- }
- catch (IOException ex) {
- System.err.println("Exception: " + ex.getClass().getSimpleName() + ": " + ex.getLocalizedMessage());
- }
- }
-}
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduReaderPlayerLog.txt b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduReaderPlayerLog.txt
deleted file mode 100644
index 7c6a4361a8bd52edb1b201b3d1fa30f04e886f5a..0000000000000000000000000000000000000000
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/PduReaderPlayerLog.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-Invocation instructions:
-
-0. check for existence of recorded files in directory, e.g. examples/pduLog/Pdusave.dislog
-1. first running AllPduReceiver can confirm that DIS replay actually occurs.
-2. run or debug PduReaderPlayer.java
-3. Type p/enter to pause, r/enter to resume, q/enter to quit
-
-Program response:
-
-===================================================
-
-DisExamplesOpenDis7.PduReaderPlayer started...
-Beginning pdu playback from directory pduLog
-Replaying DIS logs.
-Replaying C:\x-nps-gitlab\NetworkedGraphicsMV3500\examples\pduLog\Pdusave.dislog
-Beginning of DIS capture file, Pdusave.dislog.
-Type p/enter to pause, r/enter to resume, q/enter to quit
-72
-End of replay from Pdusave.dislog
-End of DIS capture file, Pdusave.dislog.
-q
-Ending pdu files playback for directory pduLog
-DisExamplesOpenDis7.PduReaderPlayer complete.
-BUILD SUCCESSFUL (total time: 20 seconds)
\ No newline at end of file
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/README.md b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/README.md
deleted file mode 100644
index 89d90724bc17cff98112589508dcace4ba72345a..0000000000000000000000000000000000000000
--- a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/README.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# DIS Protocol Examples using Open-DIS-Java Library v7
-
-TODO under development!
-
-Course examples using the [Open-DIS-Java](https://github.com/open-dis/open-dis-java) library are presented in this package.
-
-See [specifications](../../../specifications) directory to obtain reference copies of DIS and RPRFOM standards.