) ▁Connect s ▁two ▁objects . ▁ ▁Fe ints / d umm ies ▁and ▁install ations ▁Source : ▁ ▁M ob ility ▁and ▁auxili ary ▁equipment ▁Source : ▁ ▁Text ▁mod ifiers ▁ ▁Quant ity ▁( field ▁C ) ▁Ident ifies ▁the ▁number ▁of ▁equipment ▁items ▁present . ▁ ▁Rein for ced ▁or ▁reduced ▁( field ▁F ) ▁Dis plays ▁(+ ) ▁for ▁rein for ced , ▁(- ) ▁for ▁reduced , ▁( ± ) ▁for ▁rein for ced ▁and ▁reduced . ▁ ▁Staff ▁comments ▁( field ▁G ) ▁ ▁Add itional ▁information ▁( field ▁H ) ▁ ▁E valu ation ▁rating ▁( field ▁J ) ▁A ▁letter - and - number ▁reli ability ▁and ▁cred ibility ▁rating , ▁assigned ▁by ▁Int elligence . ▁ ▁Com bat ▁effect iveness ▁( field ▁K ) ▁ ▁Sign ature ▁equipment ▁( field ▁L ) ▁U sed ▁for ▁host ile ▁equipment ; ▁" !" ▁indicates ▁a ▁detect able ▁electronic ▁signature . ▁ ▁High er ▁formation ▁( field ▁M ) ▁Number ▁or ▁title ▁of ▁higher ▁e ch el on ▁command . ▁ ▁Host ile ▁( en emy ) ▁( field ▁N ) ▁" EN Y " ▁denotes ▁host ile ▁equipment . ▁ ▁I FF / SI F ▁( field ▁P ) ▁I FF / SI F ▁Ident ification ▁modes ▁and ▁codes . ▁ ▁S IG INT ▁mob ility ▁indicator ▁( field ▁R 2 ) ▁" M " ▁for ▁Mobile , ▁" S " ▁for ▁St atic , ▁" U " ▁for ▁Un certain . ▁ ▁Un ique ▁design