GLANSER

GLANSER (Geospatial Location Accountability and Navigation System for Emergency Responders) is a heatproof and waterproof wireless tracking system designed to locate and aid firefighters and other emergency responders should they become trapped in a fire. GLANSER units are small black boxes that attach to a firefighter’s air tank. The black box combines a microwave radio, a lightweight battery, and various navigation systems into a “tracking device the size of a paperback book"