Patrol Squadron 28 (VP-28) (2nd) Operation HARDTACK

Established as Bombing Squadron ONE HUNDRED EIGHT (VB-108) on 1 Jul 1943. Redesignated Patrol Bombing Squadron ONE HUNDRED EIGHT (VPB-108) on 1 Oct 1944; Patrol Squadron ONE HUNDRED EIGHT (VP-108) on 15 May 1946; Heavy Patrol Squadron (Landplane) EIGHT (VP-HL-8) on 15 Nov 1946; Patrol Squadron TWENTY EIGHT (VP-28) (2nd) "Hawaiian Warriors" on 1 Sep 1948. Disestablished on 1 Oct 1969.

Lockheed P2V-5 Neptune
Operation Hardtack was a nuclear weapons test program in the Central Pacific in 1958. VP-28 patrolled a large ocean area to prevent any stray ships and aircraft from wandering into the danger area and to provide early warning on shot days for all persons located within the operating area.
Operation Hardtack involved placing U.S. Naval Ships, weapons systems and instrumentation around an underwater nuclear device and then analyzing the results of the explosion. The naval assets included surface ships, small K class submarines and underwater mines.