Kristen Emery, then 13 and in the 8th grade, was undergoing chemotherapy to fight Hodgkin's lymphoma. When her eyebrows and eyelashes fell out, she penciled them in for her class photo. (Courtesy of Kristen Emery)Air Force Sgt. Paul Cyman photographed in his helmet and flack jacket after a rocket attack in Vietnam between 1971 and 1972. Cyman was a military firefighter who was directly exposed to the aqueous foam used to put out aircraft fires. (Courtesy of Paul Cyman)Kristen Emery and her siblings played on the shore of the Banana River at Patrick Air Force Base in Florida in the early 1980s and would fish from the docks, eating what they caught. (Courtesy of Kristen Emery)Kristen Emery's siblings play in the back of their military housing at Patrick Air Force Base in Florida. The kids liked to dig in the dirt, Emery said. (Courtesy of Kristen Emery)