During a meeting for air-ground integration, Chief Warrant Officer Brent Gruber (left), from Freeport, Pa., an AH-64D Apache attack helicopter maintanence test pilot in Company C, 1st Battalion, 227th Aviation Regiment, 1st Air Cavalry Brigade, 1st Cavalry Division, explains how the weapons systems of the Apache work to 2nd Lt. Martin Crowe (right), from Columbus, Ohio, a convoy commander in 2nd Battalion, 107th Cavalry Regiment, Ohio National Guard, at Camp Taji, Iraq, Aug. 10. The meeting took place to let the infantry Soldiers know the capabilities of an Apache.