A crew chief waits for the pilot's call to pull the chocks.
A 451st Expeditionary Aircraft Maintenance Squadron crew chief waits for the pilot's call to pull the chocks during an A-10 Thunderbolt II aircraft launch at Kandahar Airfield, Afghanistan, on Jan. 20, 2012. The A-10 can employ a wide variety of conventional munitions, including general-purpose bombs, cluster bomb units and laser-guided bombs.