In 1951, the Navy reopened the airfield as NALF Brown Field, a naval auxiliary landing field, due to increased military activity stemming from the Korean War and the Cold War. In 1954, Brown Field was again commissioned and redesignated as a Naval Auxiliary Air Station, with facilities to support regular operations of Fleet aircraft, assigned missile programs, and field carrier landing practice. In 1955, NAAS Brown Field was home to one utility squadron (VU), two air antisubmarine warfare squadrons (VS), a fleet aircraft service squadron (FASRON), and a Regulus air missile unit. The following year, the base was home to two utility squadrons, VU-3 and VU-7, the headquarters for Commander, Utility Wing Pacific (COMUTWINGPAC), a FASRON 4 detachment, and a ground control approach unit. Aircraft that operated at NAAS Brown Field included the F6F Hellcat, F9F Cougar, SNB, R4D Skytrain, JD-1 Invader, P2V Neptune, and FJ Fury. On November 2, 1954, the Convair XFY-1 Pogo made a transitional flight from vertical takeoff to horizontal flight, then back to a vertical landing at NAAS Brown Field. In 1957, NAAS Brown Field was selected as a site for one of the Vanguard Earth Satellite Tracking Stations.