His operational assignments have included a full range of duties in SEAL Team, SEAL Delivery Vehicle (SDV) Teams and Special Boat Teams, and deployments to named and contingency operations around the world.
England national football team | Argentina national football team | United States men's national soccer team | Mexico national football team | Brazil national football team | Italy national football team | Scotland national football team | Germany national football team | Wales national football team | Spain national football team | France national football team | Netherlands national football team | England national rugby union team | Canada men's national soccer team | Belgium national football team | Wales national rugby union team | seal | New Zealand national rugby union team | The A-Team | New Zealand Māori rugby league team | Ireland national rugby union team | Colombia national football team | Portugal national football team | Denmark national football team | Poland national football team | England cricket team | Sweden national football team | Scotland national rugby union team | Norway national football team | Georgia national rugby union team |
Chalker initially served with SEAL Team One but was hand-selected by Commander Richard Marcinko to become a plankowner of the Navy's first dedicated counter-terrorist unit, SEAL Team Six.
SEAL Team Six was released May 10, 2011, only a week after DEVGRU took part in the operation that killed Osama Bin Laden.
Following Basic Underwater Demolition/SEAL training (BUD/S), where he graduated as Honor Man - Class 93, Rear Adm. Maguire served in Underwater Demolition Team Twenty One, SEAL Team Two, SEAL Delivery Vehicle Team Two, Naval Special Warfare Development Group, Naval Special Warfare Group Two, and later as Deputy Commander, Special Operations Command Pacific, and Deputy Commander, Naval Special Warfare Command.
The United States Naval Special Warfare Development Group (SEAL Team Six or ST6), the United States Navy's secretive tier-one Counter-Terrorism and Special Mission Unit