Bonnie Amos, right, exchanges greetings with a U.S. Marine assigned to the 2nd Battalion, 7th Marine Regiment and a military working dog at Forward Operating Base Kajaki in Helmand province, Afghanistan, Dec. 25, 2012. Amos and her husband, U.S. Marine Corps Gen. James F. Amos, the commandant of the Marine Corps, visited U.S. and coalition forces service members during a holiday trip to the region. (U.S. Marine Corps photo by Sgt. Mallory S. VanderSchans/Released)