US Army (USA) STAFF Sergeant (SSGT) Robert A. Castillo (left) and SPECIALIST Fourth Class (SPC) Frank Mireles (right), Alpha Company (A Co), 1ST Battalion, 36th Infantry Regiment (1/36th), deployed with the US Marine Corps (USMC) I Marine Expeditionary Force (MEF), patrol through construction site while participating in Operation MONTGOMERY in Hit, Al Anbar Province, Iraq (IRQ), during Operation IRAQI FREEDOM