Colonel Jesus Villamor Air Base, or simply Villamor Air Base , is the headquarters of the Philippine Air Force (PAF) and shares runways with Ninoy Aquino International Airport (NAIA). It was formerly known as Nichols Field or Nichols Air Base and possibly as Nichols Freeport Zone. Chiefly used as a PAF transport/helicopter airbase, it is also the military installation that the Philippine president uses when departing for foreign or domestic trips, though foreign departures are mostly done at the Philippine Airlines-operated NAIA Terminal 2 (as PAL is the official charter airline for the Philippine president). Also, foreign dignitaries visiting Manila would usually arrive at the air base.