Stealth technology

Stealth technology also known as LOT (Low Observability Technology) is a sub-discipline of military (like Army, Navy, Air Force, Marine, Coast Guard and National Guard in the North American United States) electronic countermeasures which covers a range of techniques used with aircraft, ships and missiles, in order to make them less visible.

F-117 stealth attack plane

For example, stealth technology was developed to make aircraft difficult to detect with radar.