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Helicopter Aircrew Breathing Device
The Helicopter Aircrew Breathing Device or HABD is a piece of military survival gear which was adpoted in order to increase the chances of survival for embarked troops and aircrew trapped in an aircraft which has ditched (crashed into a body of water.) Similar in function to SCUBA gear, it consists of a small cylinder pressurized with atmospheric air and first stage regulator worn in a pouch on the user's flotation vest; a pressure gauge; an air hose and a special second-stage regulator (the part that delivers air via the user's mouth).
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