U.S. Marine Corps officers receive a briefing during urban operations training at The Basic School on Marine Corps Base Quantico, Va., March 28, 2014. U.S. Marine Corps officers receive a briefing during urban operations training at The Basic School on Marine Corps Base Quantico, Va., March 28, 2014. SHARE IMAGE: Download Image: Full Size (2.29 MB) Tags: Photo Essays Photo By: VIRIN: 535593-W-SPK22-712.jpg Photo Gallery