CONCERTINA CONTROL U.S. Army soldiers lay concertina wire to improve security on Forward Operating Base Baylough in the Deh Chopan district of Zabul province, Afghanistan, July 23, 2009. The soldiers are assigned to the 1st Battalion, 4th Infantry Regiment. SHARE IMAGE: Download Image: Full Size (0.09 MB) Photo By: VIRIN: 976509-W-STP23-285.jpg Photo Gallery