STK201427SVictoria Crater on Mars
STK102226MA U.S. Navy MH-60S Knighthawk helicopter conducts vertical replenishment drills.
STK102221MAn F-16 Fighting Falcon in flight.
STK102220MU.S. Marine takes cover behind a wall after receiving sniper fire during a patrol through Haqlaniyah, Iraq.
STK102219MA Bulgarian army soldier, scans the battlefield in front of him with his rocket-propelled grenade launcher.