Nathan Kempton, 10-year-old resident of Portland, Ore., learns about muscles and clams from camp counselor Annie Wensley during the aquatic touch tank activity of Camp Corral summer camp for military children at Gig Harbor, Wash., Aug. 4. Camp Corral is a free week-long summer camp to military children and has served more than 4,000 military children since the start of the program in 2011.