Maj. Gen. Christopher Bence, U.S. Air Force Expeditionary Center commander speaks during the 2017 Operation Christmas Drop Push Ceremony Dec. 11, 2017, at Andersen Air Force Base, Guam. The ceremony marked the continuation of the longest running Department of Defense humanitarian and disaster relief training mission, which delivers donated supplies to remote Pacific Islands via low-cost, low-altitude airdrops from C-130 aircraft. (U.S. Air Force photo by Airman 1st Class Christopher Quail)