A member of the Philippines Air Force ties a knot to secure a T-10 parachute onto a Low-Cost, Low-Altitude bundle during bundle building day at Operation Christmas Drop 2018 at Andersen Air Force Base, Guam, Dec. 8, 2018. In continuing to train with its allies, the U.S. Air Force and its partners deter aggression, increase shared operational capacity, and maintain peace and stability in the Indo-Asia Pacific region. (U.S. Air Force photo by Senior Airman Matthew Gilmore)