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                                                Patrol Squadron 21 (VP-21) (5th)
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                                                Established as Bombing Squadron ONE HUNDRED ELEVEN (VB-111) on 30 Jul 1943. Redesignated Patrol Bombing Squadron ONE HUNDRED ELEVEN (VPB-111) on 1 Oct 1944; Patrol Squadron ONE HUNDRED ELEVEN (VP-111) on 15 May 1946; Redesignated Heavy Patrol Squadron (Landplane) ELEVEN (VP-HL-11) on 15 Nov 1946; Patrol Squadron TWENTY ONE (VP-21) (5th) on 1 Sep 1948. Disestablished on 21 Nov 1969. 
 
Consolidated PB4Y-2 Privateer 
Martin P4M-1 Mercator  
Lockheed P2V-6/5F Neptune 
 
Insignia (1st) approved on 19 Feb 1948. 
USA made. 
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