Rappelling in the context of Belayer

Air assault is the movement of ground-based military forces by vertical take-off and landing (VTOL) aircraft, such as helicopters, to seize and hold key terrain that has not been fully secured, and to directly engage enemy forces behind enemy lines. In addition to regular infantry training, air-assault units usually receive training in rappelling, fast-roping techniques, and air transportation. Their equipment is sometimes designed or field-modified to allow better transportation and/or carrying within aircraft.

The United States Army field manual FM 1-02 (FM 101-5-1) describes an "air assault operation" as an operation in which assault forces (combat, combat support, and combat service support), using the firepower, mobility, and total integration of helicopter assets, maneuver on the battlefield under the control of the ground or air maneuver commander to engage and destroy enemy forces or to seize and hold key terrain usually behind enemy lines.

Canyoning (canyoneering in the United States, kloofing in South Africa) is a sport that involves traveling through canyons using a variety of techniques, such as walking, scrambling, climbing, jumping, abseiling (rappelling), swimming, and rafting.

Although non-technical descents such as hiking down a canyon ("canyon hiking") are often referred to as "canyoneering", the terms "canyoning" and "canyoneering" are more often associated with technical descents—those that require rappels and ropework, technical climbing or down-climbing, technical jumps, and/or technical swims.