The military developed parachuting technology as a way to save aircrews from emergencies aboard balloons and aircraft in flight, and later as a way of delivering soldiers to the battlefield. High-altitude military parachuting (or military freefall (MFF)) is a method of delivering military personnel, military equipment, and other military supplies from a transport aircraft at a high altitude via free-fall parachute insertion. Two techniques are used: HALO (high altitude – low opening) and HAHO (high altitude – high opening).
In the HALO technique, the parachutist opens his parachute at a low altitude after free-falling for a period of time, while in the HAHO technique, the parachutist opens his parachute at a high altitude just a few seconds after jumping from the aircraft. Military HALO techniques date back to 1960, while in recent years, the HALO technique has been practiced by civilians as a form of skydiving.
This footage shows U.S. Air Force Special Operations SERE (Survival, Evasion, Resistance and Escape) Airmen from all over PACAF together at Yokota (Tokyo, Japan) to accomplish night-time static and halo jumps out of a C-130H. Talk about excitement.
Check it out: