Do you know the difference between a Tier 1 Navy SEAL and a Tier 2 Navy SEAL? For starters, the U.S. Navy SEALs are a highly ...

The military world is full of initialisms and acronyms. Many of these are well known, NATO, USAF, and RAF all spring to mind. But what about the US Navy's acronym -- DEVGRU? The lesser-known status of ...