U.S. Marine Staff Sgt. Derick Clark, a kennel supervisor with Headquarters and Service Company, 2nd Battalion, 9th Marine Regiment, comforts Yeager, an improvised explosive device detection dog, as they wait for the beginning of a memorial service in honor of Lance Cpl. Abraham Tarwoe, Yeager's handler, on Combat Outpost Duluth, Afghanistan, April 22, 2012. Tarwoe, who was assigned to Weapons Company, 2nd Battalion, 9th Marines, was killed in action during a dismounted patrol in support of combat operations. U.S. Marine Corps photo by Cpl. Alfred V. Lopez.