I believe Elvis went into FBI SIS down in Argentina for a while then back here to the US where he continued to work deep FBI for a long long time.
FBI Special Intel Services was started after WWII to chase down NAZI's in South America and the USA.
This anon was able to find some pics of Elvis snapped in South America a few days after he died while walking through a market. But those pics are oddly not find able again
This was a theory due to a spoopy post long ago about Elvis.
It also dove tailed into the R theory with JFK Jr. That both of these guys went into FBI SIS
I pooped myself a little when I saw Trump award Elvis out of nowhere!
Crazier shit has happened. Both guys had hell hounds on their trail when they died. So maybe? We'll never know.