“Open source flight information reviewed by Military.com showed a CH-53 Super Stallion having previously operated under the call sign Tiger 11 flying west from El Centro, California; its last known location, according to the flight tracker, was recorded late Tuesday night and in the vicinity of the reported discovery site.
The Marines are assigned to Marine Heavy Helicopter Squadron 361 of the 3rd Marine Aircraft Wing in California. Their nickname is the Flying Tigers.”
Good catch. “Tiger 11”