U.S. Air Force Capt. Alex Lu, 633rd Air Base Wing chaplain, visits the Langley Chapel at Joint Base Langley-Eustis, Va., July 25, 2017. After serving three years in the Army, Lu transitioned into the Air Force to be stationed closer to his parents through a humanitarian reassignment. (U.S. Air Force photo/Airman 1st Class Anthony Nin Leclerec)