 A major construction program ensued, with NAS Sanford redeveloped as a Master Jet Base for carrier-based Douglas A-3 Skywarrior and later North American A-5A and RA-5C Vigilante aircraft.At its peak in the mid-1960s, the base was home to nearly 4000 military personnel, comprising the air station personnel complement, an Aircraft Intermediate Maintenance Department, the Navy Dispensary, the Marine Barracks, a Replacement Air Group/Fleet Replacement Squadron for the RA-5C, and nine deployable Fleet RA-5C squadrons that routinely deployed aboard large aircraft carriers to the Mediterranean and the Pacific.The latter were heavily engaged in combat operations during the Vietnam War.