The HEED 3, or Helicopter Emergency Egress Device, is a compact and lightweight breathing system designed by Submersible Systems, Inc. to assist in emergencies involving submersion in water. First developed in 1979 for U.S. Navy helicopter pilots, it is built to increase survivability in such scenarios.
The HEED 3 with Hose is suited for situations where emergency breathing is required, particularly during water ditching or vehicle submersion. Its practical design allows for quick access and reliable air supply, making it a standard piece of equipment for those working in high-risk environments.