A U.S. Marine uses the cover of a truck and green smoke. A U.S. Marine uses the cover of a truck and green smoke as he provides security while his fellow Marines dismount during a mock ambush in Combat Town at the Central Training Area, Japan, on June 24, 2005. The ambush is part of a Rear Area Operations Field Exercise for the Marines. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 169903-G-EJS65-406.jpg Photo Gallery