U.S. Air Force Tech. Sgt. Daniel Santos, U.S. Air Force Heritage Band of America guitarist, poses for a photo at Joint Base Langley-Eustis, Virginia, Aug. 1, 2018. Santos began conducting free guitar lessons for service members and all other DoD ID card holders in an effort to boost resiliency. (U.S. Air Force photo by Airman 1st Class Monica Roybal)