▁Other ▁ex os ke leton ▁systems , ▁such ▁as ▁the ▁Ray the on / S AR CO S ▁X OS ▁ 2 ▁system ▁are ▁t ether ed ▁to ▁a ▁power ▁generator . ▁ ▁Lock he ed ▁Martin ▁announced ▁that ▁it ▁is ▁evalu ating ▁fuel ▁cell ▁power ▁sources ▁to ▁increase ▁the ▁duration ▁to ▁support ▁a ▁ 9 6 - hour ▁mission . ▁▁ ▁H U LC ▁is ▁also ▁easy ▁to ▁put ▁on . ▁It ▁arriv es ▁fol ded ▁in ▁a ▁small ▁package , ▁so ▁soldiers ▁just ▁have ▁to ▁stretch ▁out ▁a ▁leg ▁and ▁step ▁into ▁foot ▁b eds ▁under ne ath ▁the ▁boot . ▁Stra ps ▁then ▁wrap ▁around ▁the ▁th igh s , ▁wa ist ▁and ▁shoulders . ▁ ▁S ens ors ▁in ▁the ▁foot ▁p ads ▁relay ▁information ▁to ▁an ▁on board ▁micro comput er ▁that ▁moves ▁the ▁hyd ra ul ic ▁system ▁to ▁ampl ify ▁and ▁enh ance ▁the ▁wear er ' s ▁movement . ▁ ▁The ▁flex ibility ▁of ▁the ▁system ▁allows ▁soldiers ▁to ▁run , ▁walk , ▁kne el , ▁craw l , ▁and ▁even ▁go ▁into ▁low ▁squ ats . ▁ ▁There ▁is ▁no ▁jo yst ick ▁or ▁control ▁mechanism , ▁instead ▁sens ors ▁detect ▁movement ▁and , ▁using ▁an ▁on board ▁micro - comput er , ▁make ▁the ▁suit ▁move ▁in ▁time ▁with ▁the ▁body . ▁The ▁system ' s ▁tit an ium ▁structure ▁and ▁hyd ra ul ic ▁power ▁aug ments ▁the ▁soldier ' s ▁ability , ▁strength ▁and ▁performance , ▁whereas ▁its ▁mod ular ity