. ▁The ▁Pers ian ▁G ulf ▁War ▁and ▁wars ▁there after ▁brought ▁about ▁new ▁tact ics ▁and ▁adv anc ements ▁that ▁required ▁massive ▁log ist ical ▁support . ▁Military ▁engine ers ▁also ▁had ▁a ▁helping ▁hand ▁in ▁the ▁design ▁and ▁construction ▁of ▁military ▁command ▁cent ers ▁such ▁as ▁the ▁Che y enne ▁Mountain ▁complex ▁in ▁Colorado ▁Spr ings , ▁Colorado , ▁which ▁houses ▁the ▁North ▁American ▁A eros pace ▁Def ense ▁Command ▁( N OR AD ). ▁ ▁Short age ▁of ▁military ▁engine ers ▁in ▁the ▁ 2 1 st ▁century ▁The ▁ 2 1 st ▁century ▁brought ▁about ▁a ▁problem ▁that ▁existed ▁in ▁the ▁early ▁history ▁of ▁United ▁States ▁military ▁engineering . ▁Care ers ▁in ▁military ▁engineering ▁require ▁four - year ▁b ach elor ’ s ▁degrees ▁in ▁specific ▁engineering ▁fields ▁such ▁as ▁civil , ▁mechanical , ▁and ▁elect rical ▁along ▁with ▁degrees ▁in ▁mathematical ▁sciences ▁and ▁natural ▁sciences . ▁A ▁short age ▁in ▁the ▁number ▁of ▁students ▁gradu ating ▁in ▁these ▁fields ▁of ▁science , ▁technology , ▁engineering , ▁and ▁mathematics , ▁also ▁known ▁as ▁S TE M ▁maj ors , ▁is ▁causing ▁a ▁short age ▁in ▁military ▁engine ers ▁in ▁the ▁United ▁States . ▁ ▁According ▁to ▁Department ▁of ▁Def ense ▁S TE M ▁officials , ▁social ▁networking , ▁poor ▁credit ▁history , ▁and ▁a ▁lack ▁of ▁interest ▁in ▁engineering ▁contribute ▁to ▁the ▁short age . ▁Social ▁networking ▁and ▁media ▁release ▁information ▁about ▁potential ▁employees ▁that ▁is ▁accessible ▁world - wide . ▁United ▁States ▁government ▁care ers ▁and ▁positions ▁require