Chief Warrant Officer 4, Terry Polwort, from Enid, Okla., an AH-64D Apache attack helicopter instructor pilot in Company A, 4th Battalion, 227th Aviation Regiment, 1st Air Cavalry Brigade, 1st Cavalry Division, Multi-National Division – Baghdad, reads through his checklist during a preflight inspection of an Apache at Camp Taji, Iraq, Sept. 24. (US Army photo via army.mil.)