U.S. Marines with 2nd Battalion, 8th Marine Regiment, Regimental Combat Team 3, 2nd Marine Expeditionary Brigade prepare to board CH-53D Sea Stallion and CH-53E Super Stallion helicopters at Forward Operating Base Dwyer, Afghanistan, on July 2, 2009. The Marines are working with the Afghan National Security Force to build and transition security responsibilities for the Helmand province to Afghan forces.