6 4 th ▁Str ateg ic ▁Miss ile ▁Squadron ▁station ed ▁at ▁the ▁Warren ▁I ▁complex . ▁A ▁month ▁later , ▁Warren ▁A FB ▁became ▁the ▁recip ient ▁of ▁the ▁first ▁air - transport ed ▁Atlas ▁miss ile . ▁In ▁the ▁presence ▁of ▁General ▁Power , ▁the ▁Commander ▁in ▁Chief ▁of ▁S AC , ▁the ▁first ▁Atlas ▁D ▁complex ▁was ▁turned ▁over ▁to ▁the ▁ 5 6 4 th ▁S MS ▁and ▁declared ▁oper ational ▁on ▁ 9 ▁August ▁ 1 9 6 0 . ▁ ▁As ▁work ▁proceeded ▁at ▁the ▁Warren ▁I ▁complex , ▁the ▁Army ▁Corps ▁of ▁Engine ers ▁contract ed ▁for ▁" W ar ren ▁II " ▁with ▁three ▁sites ▁with ▁three ▁Atlas - D ▁launch ers ▁at ▁each ▁in ▁February ▁ 1 9 5 9 . ▁The ▁Warren ▁II ▁site ▁was ▁ready ▁in ▁the ▁summer ▁of ▁ 1 9 6 0 . ▁The ▁ 5 6 5 th ▁Str ateg ic ▁Miss ile ▁Squadron , ▁activ ated ▁on ▁ 1 ▁December ▁ 1 9 5 9 , ▁operated ▁the ▁nine ▁launch ers . ▁ ▁The ▁Warren ▁III ▁site , ▁designed ▁for ▁nine ▁SM - 6 5 E ▁Atlas ▁miss iles ▁would ▁be ▁scattered ▁over ▁a ▁ ▁area ▁at ▁single ▁" co ff in " ▁launch ▁sites . ▁The ▁term ▁" co ff in " ▁was ▁used ▁because ▁the ▁miss ile ▁laid ▁on ▁its ▁side ▁under ground ▁with ▁the ▁coff in ▁roof ▁at ▁ground ▁level . ▁This ▁configuration ▁offered ▁limited ▁protection ▁for ▁the ▁launch er . ▁On ▁ 1 ▁October