Ok, so the name SeAL Team 6 was retired a while ago, shortly after Dick Marcinko was relieved of command and forced to retire from the Navy. The Navy, in order to distance itself from the fiasco, renamed the team Navy Special Warfare Development Group, DEVGRU for short.

Each SeAL team is broken down at the "company" level into squadrons. However, at DEVGRU they don't call them squadrons. They each took a color to denote themselves. Green Team is DEVGRU hopefuls going thru their pipeline training program to hopefully become members. Then there's Red, Gold, Blue, and Black squadrons, or "teams."