rolling ▁in ▁autom ob iles ▁and ▁were ▁less ▁likely ▁to ▁observe ▁public ▁dis order ▁inc idents . ▁ ▁Department ▁Ar rest ▁Statistics ▁from ▁ 1 9 0 0 - 1 9 7 0 ▁(* ▁per ▁ 1 , 0 0 0 ▁population ) ▁ ▁Organ iz ational ▁structure ▁ ▁The ▁Des ▁Mo ines ▁Police ▁Department ▁consists ▁of ▁three ▁separate ▁divisions . ▁ ▁Administr ative ▁Services ▁Division ▁ ▁Oper ations ▁Division ▁▁ ▁The ▁division ▁consists ▁of ▁the ▁Pat rol ▁Services ▁Bureau ▁and ▁the ▁Hom eland ▁Security ▁Bureau . ▁The ▁Hom eland ▁Security ▁Bureau ▁includes ▁Airport ▁Security , ▁Bomb ▁Squad , ▁F usion ▁Center , ▁and ▁Metro ▁Special ▁T act ics ▁and ▁Response . ▁ ▁Investig ations ▁Division ▁ ▁The ▁division ▁consists ▁of ▁the ▁Det ect ive ▁Bureau . ▁ ▁November ▁ 2 0 1 6 ▁shooting ▁▁ ▁On ▁November ▁ 2 , ▁ 2 0 1 6 , ▁Des ▁Mo ines ▁Police ▁Department ▁Officer ▁Serge ant ▁Anthony ▁B em in io ▁and ▁Ur band ale ▁Police ▁Department ▁Officer ▁Justin ▁Martin ▁were ▁killed ▁in ▁amb ush - style ▁shoot ings ▁near ▁Des ▁Mo ines . ▁The ▁shooting ▁received ▁national ▁attention ▁as ▁President ▁Bar ack ▁Ob ama ▁described ▁the ▁kill ings ▁as ▁“ sh ame ful ▁acts ▁of ▁violence ," ▁and ▁continued ▁on ▁to ▁say ▁“ S gt . ▁Anthony ▁B em in io ▁and ▁Officer ▁Justin ▁Martin ▁represented ▁our ▁best , ▁most ▁decent ▁instinct s ▁as ▁human ▁be ings ▁— ▁to ▁serve ▁our ▁neighb ors , ▁to ▁put ▁ourselves ▁in ▁harm ’ s ▁way ▁for