U.S. Marines with Headquarters Battalion, Marine Forces Reserve lift ammo cans over their heads during a combat fitness test in New Orleans, La., on Aug. 18, 2009. Individual readiness is measured by requiring Marines in battle dress uniform to sprint a timed 880 yards, lift a 30-pound ammunition can overhead from shoulder height repeatedly for two minutes and perform a maneuver-under-fire event, which is a timed 300-yard shuttle run in which Marines perform a series of combat-related tasks.