GROUND JUMP SCHOOL WITH DRILL SGT BOWLING, US ARMY JUMPMASTER. The United States Army Jumpmaster School trains personnel in the skills necessary to jumpmaster a combat-equipped jump and the proper attaching, jumping, and releasing of combat and individual equipment while participating in an actual jump that is proficient in the duties and responsibilities of the Jumpmaster and Safety; procedures for rigging individual equipment containers and door bundles; personnel parachute components by their