Think Dale Gribble from "King of the Hill" anon. He used the pseudonym "Rusty Shackleford" when ordering PIZZA because he thought the government was spying on him. KEK
https://www.youtube.com/channel/UCGF4cH9t6SgF5e4OELMbDjg
Possibly, but training accidents, especially these amphibious ones, are unfortunately pretty common. Goes with the territory.
Here is one from 2000 I just way-backed – probably one out there for every year if you want to go back through them and look. It is pretty eye-opening:
https://www.marines.mil/News/Messages/Messages-Display/Article/886758/mishap-fatality-and-injury-summary-for-december-2000/