A personal locator beacon could save his bacon.
There is no fee for registering the unit with NOAA and there are no monitoring fees.
It's only $419 for the whole safety kit.
acr PLB ResQLink View Survival Kit
by Jarboys Outdoors & Marine Supplies -AUTHORIZED
Learn more:
https://www.amazon.com/dp/B07XLD19T4...ing=UTF8&psc=1