The ANGEL beacon is a palm-sized Cospas-Sarsat beacon that integrates into the Orion Crew Survival Systems suit the astronauts will wear during launch and landing. If there is a contingency, such as a launch abort or landing outside the target splashdown zone, the ANGEL beacons will allow NASA’s Search and Rescue team to find the astronauts.
https://phys.org/news/2023-08-nasa-team-safe-artemis-ii.html