Military police with 1st Law Enforcement Battalion, I Marine Expeditionary Force, review the loading and clearing procedures of the .50-caliber machine-gun prior to a crew served weapons shoot at Large Scale Exercise-1, Javelin Thrust 2012, July 8. Javelin Thrust is an annual large-scale exercise with 1st Marine Expeditionary Brigade at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., which allows active and reserve Marines and sailors from 38 different states to train together as a seamless Marine Air Ground Task Force.