Local congresswoman Nancy Mace said: “How in the hell do you lose an F-35? How is there not a tracking device and we’re asking the public to what, find a jet and turn it in?”
It's a stealth fighter! Adding a tracking beacon would be self-defeating: if it's made intentionally easy for the USMC to find, that can be used by enemies.
US military asks for help to find missing F-35 fighter jet after ‘mishap’ sees pilot eject:
https://www.theguardian.com/us-news/2023/sep/18/missing-f-35b-lighting-ii-fighter-jet-us-military-help-marine-corps-pilot-ejects