Question: Marine Aviation Training Support Group 21 was reactivated when which Navy base near Warrington was renamed?
Sentence (from "Naval Air Station Pensacola"): Naval Air Station Pensacola or NAS Pensacola (IATA: NPA, ICAO: KNPA, FAA LID: NPA) (formerly NAS/KNAS until changed circa 1970 to allow Nassau International Airport, now Lynden Pindling International Airport, to have IATA code NAS), "The Cradle of Naval Aviation", is a United States Navy base located next to Warrington, Florida, a community southwest of the Pensacola city limits.
Relevant evidence: Yes