Watch: Special Forces HALO training with Chilean military

HALO techniques are used for missions to prevent detection of the aircraft and the jumpers. Extreme accuracy is required, because the parachutes are deployed at a low altitude. HALO involves paratroopers jumping at around 25,000 feet and freefalling down to 3,500 feet. Plummeting at a terminal velocity of 126 mph, parachutists can descend this distance within two minutes. A HALO jump gets the jumper out of sight in a hurry, and as such, they are less vulnerable. A drawback to this technique is that the jumpers must exit the aircraft over, or close to, enemy territory, thus making the aircraft a potential target for enemy surface-to-air or air-to-air defenses.

Watch as 7th Special Forces Group Green Berets and Chilean sailors conduct high-altitude military parachuting while exiting a C-130H3 during Emerald Warrior, 2015. Emerald Warrior is the Department of Defense’s only irregular warfare exercise, allowing joint and combined partners to train together and prepare for real-world contingency operations.

https://www.youtube.com/watch?v=qlGJBdQYUB8