Brigadier Gen. Daniel D. Yoo, left, commander, Regional Command (Southwest) and Marine Expeditionary Brigade – Afghanistan, awards Petty Officer 2nd Class Joshua Van Horn, a corpsman with 1st Air Naval Gunfire Liaison Company, a Navy and Marine Corps Commendation Medal with Combat Distinguishing Device during an award ceremony aboard Camp Leatherneck, Afghanistan, Sept. 17, 2014. Van Horn received the award for heroic achievement while being a first responder to Marine casualties after their vehicle struck an improvised explosive device.