▁AG M - 8 6 B ▁The ▁nuclear ▁armed ▁AG M - 8 6 B ▁uses ▁a ▁terrain ▁cont our - match ing ▁guidance ▁system ▁( TER COM ) ▁to ▁fly ▁to ▁its ▁assigned ▁target . ▁ ▁AG M - 8 6 C / D ▁The ▁AG M - 8 6 C / D ▁C AL CM ▁car ries ▁a ▁conventional ▁fragment ation ▁payload ▁rather ▁than ▁a ▁therm on uc lear ▁payload . ▁The ▁AG M - 8 6 C / D ▁uses ▁an ▁on board ▁Global ▁Position ing ▁System ▁( G PS ) ▁couple d ▁with ▁its ▁in ert ial ▁navigation ▁system ▁( IN S ) ▁to ▁navigate ▁in ▁flight . ▁This ▁allows ▁the ▁miss ile ▁to ▁guide ▁itself ▁to ▁the ▁target ▁with ▁pin point ▁accuracy . ▁Lit ton ▁Gu id ance ▁and ▁Control , ▁and ▁Inter state ▁Electron ics ▁Cor p . ▁were ▁the ▁guidance ▁contract ors ▁for ▁the ▁C - model . ▁ ▁Development ▁ ▁AG M - 8 6 A / B ▁In ▁February ▁ 1 9 7 4 , ▁the ▁U . S . ▁Air ▁Force ▁entered ▁into ▁contract ▁to ▁develop ▁and ▁flight - test ▁the ▁prototype ▁or ▁proof ▁of ▁concept ▁vehicle ▁AG M - 8 6 A ▁air - launch ed ▁cru ise ▁miss ile , ▁which ▁was ▁slightly ▁smaller ▁than ▁the ▁later ▁B ▁and ▁C ▁models . ▁The ▁ 8 6 A ▁model ▁did ▁not ▁go ▁into ▁production ; ▁it ▁was ▁designed ▁to ▁fit ▁the ▁weapon ▁bay ▁of ▁the ▁B - 1 A , ▁which ▁was