diff --git a/models/Application_examples/Commercial_Flight b/models/Application_examples/Commercial_Flight
index 87cd3951b834f20e3b6b57ef64ff64135a2a186f..dff2ff28e968a6d4cd77cb85edd7ea067e933a39 100644
--- a/models/Application_examples/Commercial_Flight
+++ b/models/Application_examples/Commercial_Flight
@@ -6,19 +6,28 @@ Edited by Pamela Dyer in July and August, 2021.
 
 Purpose: To show a system with many roots performing 
 multiple actions, using COORDINATE and SHARE ALL statements 
-to make a complex web of actions linked together.
+to make a web of actions linked together through phases.
 
 Description: This model demonstrates the interlacing of 
 root events as Phases and as Actors, in order to model a 
-commercial flight. While complicated, users who take the 
-time to understand this model can learn about how to use 
-SHARE ALL to improve their models, and when to use 
-COORDINATE instead. In addition, the commented out code at 
-the bottom represents a simulation of COORDINATE statements 
-with SHARE ALL statements before COORDINATE statements were 
-implemented in the early MP tools.
+commercial flight. 
 
 References:
+"Example 15: Standard flight model." 
+	from Auguston, M. "Monterey Phoenix System and Software 
+	Architecture and Workflow Modeling Language Manual" 
+	(Version 4). 2020. Available online: 
+	https://wiki.nps.edu/display/MP/Documentation
+
+Auguston, Mikhail, Kristin Giammarco, W. Clifton Baldwin, 
+	Ji’on Crump, and Monica Farah-Stapleton. (2015). 
+	"Modeling and verifying business processes with Monterey 
+	Phoenix." Procedia Computer Science 44: 48-57.
+
+Giammarco, Kristin, Mikhail Auguston, W. Clifton Baldwin, 
+	Ji’on Crump, and Monica Farah-Stapleton. (2014). 
+	"Controlling Design Complexity with the Monterey Phoenix 
+	Approach." Procedia Computer Science 36: 204-209
 
 Search terms: behavior, commercial flight; event sharing; 
 coordination, event
@@ -28,13 +37,11 @@ Instructions: Run for Scope 1.
 
 ==========================================================*/
 
-/*-----------------------------------------------------
- 	Phases
------------------------------------------------------*/
-
 SCHEMA Flight
 
-
+/*-----------------------------------------------------
+ 	Main Flight Phases
+-----------------------------------------------------*/
 
 ROOT Preflight: BoardAircraft 		
 				FlightCheck 
@@ -43,7 +50,8 @@ ROOT Preflight: BoardAircraft
 				IssueGroundInstruction 	
 				Taxi ;
 
-ROOT Takeoff: 	Clear_for_takeoff 	
+ROOT Takeoff: 	(* Hold_in_queue *)		
+				Clear_for_takeoff 	
 				Liftoff 
 				Handoff_to_TRACon ;
 
@@ -59,7 +67,7 @@ ROOT EnRoute: 	IssueInstruction
 ROOT Descent: 	Clear_descent
 				Maneuver_toward_Airport ;
 
-ROOT Approach: 	[ Hold ] 	
+ROOT Approach: 	(* Hold *) 	
 				Clear_approach
 				Enter_approach_line
 				Handoff_to_tower ;
@@ -81,12 +89,14 @@ ROOT Passenger: BoardAircraft
 ROOT Pilot: 	FlightCheck 
 				Pushback 
 				Taxi 
+				(* Hold_in_queue *)
+				Clear_for_takeoff
 				Liftoff 	
 				ChangeFrequency
 				( OceanicExtension | Follow_route )
 				ChangeFrequency2
 				Maneuver_toward_Airport
-				[ Hold ] 		
+				(* Hold *)	
 				Enter_approach_line
 				Land
 				Taxi_to_gate ;
@@ -105,6 +115,22 @@ ROOT Controller: 	DepartureClearance
 					Clear_landing
 					Taxi_instruction ;
 
+/*---------------------------------------------------
+   Interactions between phases 
+/*---------------------------------------------------*/
+
+COORDINATE 	$a: Taxi FROM Preflight,
+			$b: Clear_for_takeoff FROM Takeoff
+	DO ADD $a PRECEDES $b; OD;
+
+COORDINATE 	$a: Handoff_to_TRACon FROM Takeoff,
+			$b: IssueClearances FROM Departure
+	DO ADD $a PRECEDES $b; OD;
+
+COORDINATE 	$a:Maneuver_toward_Airport FROM Descent,
+			$b:Clear_approach FROM Approach
+	DO ADD $a PRECEDES $b; OD;
+
 /*-----------------------------------------------------
 	Overlapping between actors and process phases
 -----------------------------------------------------*/
@@ -117,7 +143,8 @@ Pilot, Preflight 		SHARE ALL 	FlightCheck,
 									Pushback, 
 									Taxi;
 
-Pilot, Takeoff 	  	SHARE ALL 	Liftoff;
+Pilot, Takeoff 	  	SHARE ALL 	Hold_in_queue,
+								Liftoff;
 
 Pilot, Departure 	SHARE ALL 	ChangeFrequency;
 
@@ -153,103 +180,3 @@ Controller, Approach  	SHARE ALL 	Clear_approach,
 
 Controller, Landing 	SHARE ALL 	Clear_landing,
 									Taxi_instruction;
-
-/*---------------------------------------------------------
-	Coordination between phases 
----------------------------------------------------------*/
-
-COORDINATE	$a: BoardAircraft 	FROM Passenger, 
-			$b: FlightCheck FROM Pilot,
-			$c: DepartureClearance FROM Controller,
-			$d: Pushback FROM Pilot,
-			$e: IssueGroundInstruction FROM Controller,
-			$f: ( Taxi | Hold ) FROM Pilot,
-			$g: Clear_for_takeoff FROM Controller,
-			$h: Liftoff FROM Pilot,
-			$i: Handoff_to_TRACon FROM Controller,
-			$j: ChangeFrequency FROM Pilot,
-			$k: IssueClearances FROM Controller
-
-	DO 	ADD $a PRECEDES $b,
- 		    $b PRECEDES $c,
-			$c PRECEDES $d,
-			$d PRECEDES $e,
-			$e PRECEDES $f,
-			$f PRECEDES $g,
-			$g PRECEDES $h,
-			$h PRECEDES $i,
-			$i PRECEDES $j,
-			$j PRECEDES $k; OD;
-
-
-COORDINATE	$a: IssueInstruction 	FROM Controller, 
-			$b: ( OceanicExtension | Follow_route ) FROM Pilot,
-			$c: ChangeFrequency2 FROM Pilot,
-			$d: Handoff_to_TRACon2 FROM Controller,
-			$e: Clear_descent FROM Controller,
-			$f: ( Maneuver_toward_Airport | Hold ) FROM Pilot,
-			$g: Clear_approach FROM Controller,
-			$h: Enter_approach_line FROM Pilot,
-			$i: Handoff_to_tower FROM Controller,
-			$j: Clear_landing FROM Controller,
-			$k: Land FROM Pilot,
-			$l: Taxi_instruction FROM Controller,
-			$m: Taxi_to_gate FROM Pilot,
-			$n: Disembark FROM Passenger
-
-	DO 	ADD $a PRECEDES $b,
- 		    $b PRECEDES $c,
-			$c PRECEDES $d,
-			$d PRECEDES $e,
-			$e PRECEDES $f,
-			$f PRECEDES $g,
-			$g PRECEDES $h,
-			$h PRECEDES $i,
-			$i PRECEDES $j,
-			$j PRECEDES $k,
-			$k PRECEDES $l,
-			$l PRECEDES $m,
-			$m PRECEDES $n; OD;
-
-/*
-
-ROOT Preflight_Takeoff: 	Taxi 
-							Clear_for_takeoff ;
-
-COORDINATE	$x: Taxi 	FROM Preflight, 
-			$y: Clear_for_takeoff FROM Takeoff
-	DO ADD $x PRECEDES $y; OD;
-
-ROOT Takeoff_Departure: 	Handoff_to_TRACon
-							ChangeFrequency ;
-
-COORDINATE	$x: Handoff_to_TRACon 	FROM Takeoff, 
-			$y: ChangeFrequency FROM Departure
-	DO ADD $x PRECEDES $y; OD;
-
-/* Departure and EnRoute are coordinated within Controller */
-
-/* EnRoute and Descent are coordinated within Controller */
-
-/*ROOT Descent_Approach: 		Maneuver_toward_Airport
-							[ Hold ]
-							Clear_approach ;
-
-COORDINATE	$x: Handoff_to_TRACon 	FROM Descent, 
-			$y: ChangeFrequency FROM Approach
-	DO ADD $x PRECEDES $y; OD;
-
-/* Approach and Landing are coordinated within Controller */
- 
-/*Preflight, Preflight_Takeoff 	SHARE ALL Taxi;
-
-Preflight_Takeoff, Takeoff 		SHARE ALL Clear_for_takeoff;
-
-Takeoff, Takeoff_Departure 		SHARE ALL Handoff_to_TRACon;
-
-Takeoff_Departure, Departure 	SHARE ALL ChangeFrequency;
-
-Descent, Descent_Approach 		SHARE ALL Maneuver_toward_Airport;
-
-Descent_Approach, Approach  	SHARE ALL Hold, Clear_approach;
-