Brigadier Gen. Daniel D. Yoo, left, commander, Regional Command (Southwest) and Marine Expeditionary Brigade – Afghanistan, pins the Navy and Marine Corps Commendation Medal with Combat Distinguishing Device onto Petty Officer 2nd Class Joshua Van Horn, a corpsman with 1st Air Naval Gunfire Liaison Company, 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.