U.S. Coast Guard Petty Officer 3rd Class Savannah O'Dell talks about emergency distress beacons for 406 Day at Coast Guard Station Sand Key, Florida, April 8, 2025. There are three types of 406MHz emergency beacons used to transmit distress signals EPIRBs, ELTs and PLBs. (U.S. Coast Guard video by Petty Officer 3rd Class Santiago Gomez)