▁ ▁U . S . ▁military ▁pat rolling ▁During ▁the ▁" post - war " ▁Ira q ▁occupation , ▁occup ying ▁forces ▁have ▁turned ▁their ▁attention ▁to ▁enfor cing ▁order ▁through ▁pat rolling . ▁These ▁pat rol s ▁faced ▁ins urg ents ▁who ▁conduct ▁amb ush es ▁using ▁assault ▁rif les , ▁ro cket ▁prop elled ▁gr en ades , ▁and ▁carefully ▁placed ▁and ▁tim ed ▁explos ives . ▁The ▁pat rol s ▁require ▁arm ored ▁vehicles ▁capable ▁of ▁stopping ▁at ▁least ▁small ▁arms ▁fire ▁of ▁ 7 . 6 2   mm ▁machine ▁gun ▁r ounds ▁along ▁with ▁mand atory ▁external ▁weapons ▁platforms ▁and ▁tracking ▁equipment . ▁Exper ience ▁is ▁also ▁key ▁in ▁detect ing ▁any ▁potentially ▁threaten ing , ▁out ▁of ▁place ▁car , ▁box ▁or ▁person ▁while ▁following ▁the ▁rules ▁of ▁eng agement ▁that ▁dict ate ▁a ▁pass ive - but - ready ▁post ure . ▁Pat rolling ▁soldiers ▁spend ▁nearly ▁eight ▁hours ▁a ▁day ▁in ▁sector ▁and ▁acc r ue ▁nearly ▁ 3 0 ▁pat rol s ▁per ▁month . ▁ ▁U . S . ▁permanent ▁facilities ▁In ▁October ▁ 2 0 0 4 , ▁Ira q ' s ▁inter im ▁government ▁transferred ▁to ▁U . S . ▁ownership ▁ ▁of ▁land ▁beside ▁the ▁Tig ris ▁River ▁in ▁Bag hd ad ▁for ▁construction ▁of ▁a ▁new ▁U . S . ▁emb ass y . ▁The ▁new ▁facility ▁will ▁be ▁the ▁largest ▁of ▁its ▁kind ▁in ▁the ▁world , ▁the ▁size ▁of ▁V at ican ▁City , ▁with ▁the ▁population