Airmen donate blood at the 2017 LifeShare Blood Drive
Col. Robert Kent, 2nd Medical Group commander, prepares to give blood at the 2017 LifeShare Blood Drive at Barksdale Air Force Base, La., June 16, 2017. Only 38 percent of the United States population is able to donate blood, and only 10 percent of the population does so. (U.S. Air Force Photo/Airman 1st Class Sydney Bennett)