His parachute won't open, will he survive?

A US Army parachutist narrowly escaped tragedy after his main parachute failed. During a training jump, the equipment failed to open as expected, leaving him to fall for several seconds uncontrolled. He managed to activate his reserve parachute just before hitting the ground. The man was slightly injured but remains alive, which is a miracle considering the situation. The army has launched an investigation to determine the cause of the failure.