Bernie Green is a supervisor with the Department of Defense's Military Working Dog Breeding Program. Experts say dogs can suffer from PTSD-like conditions that can affect their military capabilities later on. Ryan Loyd/KSTX hide caption

itoggle caption Ryan Loyd/KSTX

Marine Cpl. Daniel Cornier and his colleague, Chaak, in Afghanistan. "Pretty much trust him with my life," Cornier says. Courtesy of Daniel Cornier hide caption

itoggle caption Courtesy of Daniel Cornier

Spc. Joseph Chroniger, who has bone spurs in his neck, hopes acupuncture from Dr. Shashi Kumar at Madigan Army Medical Center will give him relief from pain. Mark Harrison/The Seattle Times hide caption

itoggle caption Mark Harrison/The Seattle Times

Along with caring for her own children, Jihan Sanders takes care of the children of her best friend, operations specialist Petty Officer 1st Class Sheena Sullen, while Sullen is deployed with the guided missile destroyer USS Mahan. Before bed, Sanders hugs Zaria Sullen-Polk, 8, while Sanders' son Darric, 9, and daughter Tashawn, 12, get ready to say good night. Amanda Lucier/The Virginian-Pilot hide caption

itoggle caption Amanda Lucier/The Virginian-Pilot

Staff Sgt. Marti Ribeiro interviews an Army sergeant while embedded with a combat unit in Afghanistan. Courtesy of Marti Ribeiro hide caption

itoggle caption Courtesy of Marti Ribeiro

Staff Sgt. Bobby Henline was injured in Iraq by a roadside bomb three years ago, and was burned over nearly half of his body. After years of grueling physical therapy, he now performs at open mic night at the Rivercity Comedy Club in San Antonio. Katie Hayes for NPR hide caption

itoggle caption Katie Hayes for NPR