Staff Sgt. Oscar Chavez, 779th Medical Operations Squadron NCO in charge of outreach, signs in to the Armed Services Blood Program blood drive at Joint Base Andrews, Md., June 16, 2016. The 11th Logistics Readiness Squadron, in conjunction with ASBP, collected blood donations that will be shipped into theater and to local medical treatment facilities around the National Capitol Region. (U.S. Air Force photo by Airman Gabrielle Spalding)