Airman 1st Class Matthew Pfeffer, left, and Staff Sgt. Brian Gates, right, both 36th Airlift Squadron loadmasters out of Yokota Air Base, Japan, standby as the crew of a C-130J Super Hercules conducts a practice drop in preparation for Operation Christmas Drop 2018 at Andersen Air Force Base, Guam, Dec. 6, 2018. Each year, OCD serves as a proving ground for the techniques used and shared between the U.S. Air Force and its regional partners in preparation to respond to natural disasters. (U.S. Air Force photo by Senior Airman Matthew Gilmore)