Pains, gains, and bike chains: U.S. Marine Corps wounded warrior gives back to injured brothers and sisters-in-arms - Retired U.S. Marine Corps Master Sgt. Fernando Andrade, a volunteer and bicycle technician with Wounded Warrior Battalion-West, Wounded Warrior Regiment, installs a tire on a bicycle on Marine Corps Base Camp Pendleton, Calif., April 17, 2018. Throughout the year, athletes with the unit compete in the Marine Corps Trials, the Department of Defense Warrior Games, and cycling tours in San Diego; therefore Andrade’s maintenance is vital to each competitors’ success. (U.S. Marine Corps photo by Lance Cpl. Dalton Swanbeck)