While going through various components of an AH-64D Apache attack helicopter, 1st Lt. Carolyn Wagnild (left), from Boise, Idaho, an Apache pilot in Company C, 1st Battalion, 227th Aviation Regiment, 1st Air Cavalry Brigade, 1st Cavalry Division, Multi-National Division-Baghdad, explains how the sighting system of the Apache works to Sgt.1st Class Jonathan Duffey, from Troy, Ohio, the tactical operations center non-commissioned officer in charge for 2nd Battalion, 107th Cavalry Regiment of the Ohio National Guard, Camp Taji, Iraq, Aug. 10. The meeting between the two units is ment to build trust relations in air-ground integration.