Members of the Black Daggers, the official U.S. Army

Members of the Black Daggers, the official U.S. Army Special Operations Command Parachute Demonstration Team, perform aerial stunts during Scott Air Force Base 2017 Air Show and Open House June 10, which celebrates the base’s 100th anniversary. The Black Daggers are capable of performing both high-altitude, low-opening and high-altitude, high-opening jumps, but the principle technique they demonstrate is the HALO, which allows them to get themselves and their equipment behind enemy lines without being detected. After exiting an aircraft at high altitudes, sometimes upwards of 25,000 feet, the jumpers fall to the Earth, reaching terminal velocity before deploying their parachutes and gliding under enemy radar. (U.S. Air Force photo by Staff Sgt. Clayton Lenhardt)