Marine Corps recruits with Lima Company, 3rd Recruit Training Battalion, Recruit Training Regiment, conduct an Initial Strength Test (IST) on Marine Corps Recruit Depot Parris Island, S.C. The IST consists of timed crunches, pull-ups or pushups, and a 1.5-mile (2.5 km) run.
Factual, impartial and current. AiirSource brings you the latest insights from the United States Armed Forces. Visit our channel for in-depth and extended coverage on military events and missions: http://www.youtube.com/AiirSource
