3 . 5   mill ion ▁a ▁year ). ▁ ▁In ▁ 2 0 1 4 , ▁the ▁Aust rian ▁Ministry ▁of ▁the ▁Inter ior ▁awarded ▁G 4 S ▁a ▁contract ▁to ▁run ▁a ▁det ention ▁center ▁in ▁V ord ern berg ; ▁this ▁was ▁the ▁first ▁priv ately ▁operated ▁prison ▁in ▁Austria . ▁ ▁One ▁of ▁G 4 S ' ▁more ▁interesting ▁contract s ▁may ▁be ▁se cur ing ▁the ▁per imeter ▁of ▁Home y ▁Airport , ▁more ▁commonly ▁known ▁as ▁Area ▁ 5 1 , ▁the ▁secret ▁United ▁States ▁Air ▁Force ▁base ▁in ▁Nev ada . ▁The ▁base ▁is ▁guard ed ▁by ▁civ ili ans ▁forces ▁referred ▁to ▁by ▁those ▁who ▁watch ▁the ▁base ▁as ▁Cam mo ▁D udes . ▁As ▁neither ▁the ▁US ▁Government ▁nor ▁Military ▁will ▁discuss ▁Area ▁ 5 1 ▁there ▁is ▁no ▁official ▁answer ▁on ▁who ▁the ▁gu ards ▁work ▁for ▁however ▁as ▁a ▁result ▁of ▁evidence ▁pie ced ▁together ▁from ▁a ▁le aked ▁hand book ▁for ▁the ▁gu ards ▁and ▁local ▁job ▁ad ver ts ▁it ▁is ▁widely ▁believed ▁they ▁work ▁for ▁G 4 S . ▁ ▁As ▁of ▁ 2 0 1 8 , ▁G 4 S ▁oper ates ▁two ▁private ▁pr isons ▁in ▁Australia : ▁Mount ▁G amb ier ▁Pr ison ▁and ▁Port ▁Phill ip ▁Pr ison . ▁ ▁Oper ating ▁structure ▁G 4 S ▁segments ▁its ▁business ▁into ▁two ▁areas : ▁ ▁Sec ure ▁Sol utions ▁which ▁includes ▁services ▁for ▁commercial ▁and ▁government ▁organis ations ▁in ▁areas ▁such ▁as ▁risk ▁consult ing ,