High-altitude high-opening (HAHO) is a parachuting technique where jumpers exit an aircraft at a high altitude, typically above 10,000 feet. They deploy their parachutes shortly after leaving the aircraft, allowing for a long, controlled descent. This method is often used for military operations, as it enables jumpers to land far from the drop zone while remaining undetected. HAHO jumps require specialized training and equipment, including oxygen systems for high altitudes. The technique is advantageous for covert missions, as it allows personnel to glide silently to their target area. This approach is part of a broader set of skills used in military parachuting.