U.S. Marine Corps Lance Cpls. Gustavo Amaya (right) and Andrew Ellis, both with 1st Platoon, 1st Battalion, 5th Marine Regiment, suspect they are being observed by enemy forces during a key leader engagement in the Nawa District of Helmand province, Afghanistan, on July 11, 2009. The Marines are deployed to support NATO's International Security Assistance Force and will participate in counter insurgency operations. They will train and mentor Afghan National Security Forces to improve security and stability in the country.