 Beginning in January 1971, as part of Operation Keystone Robin Charlie the 1st MAW headquarters and VMFA-115 departed Da Nang AB for MCAS Iwakuni while VMO-2 returned to the US, leaving MAG-11 with two squadrons, VMF (AW)-225 and VMA-311 and other assorted assets, by 22 June 1971 all USMC aviation units had left South Vietnam.On 31 January 1971, 8 PAVN rockets hit the base igniting a 50,000 gallon fuel tank and damaging two KC-130s.On 21 February another rocket attack destroyed a C-130.