HELICOPTER WATCH U.S. Navy Petty Officer 3rd Class Tyrel Greenough watches the helicopter that will take him and the rest of the men participating in Operation Big Wave back to base land in Khanagawr, Afghanistan, Aug. 20, 2010. The operation was conducted to disrupt the enemy from using supply lines to bring weapons and fighters into Nawa province. Greenough is a corpsman with Headquarters Company, 3rd Battalion, 3rd Marine Regiment. SHARE IMAGE: Download Image: Full Size (0.04 MB) Photo By: VIRIN: 162667-L-EEP73-484.jpg Photo Gallery