The Navy SEALs, stands for Sea, Air and Land, also known as Team 6, are the U.S. Navy's principal special operations force. U.S. Navy SEALs go anywhere, and do anything, said Richard Marcinko, former Navy Seal and Team 6 commander accroding to WLS-TV.

The Special Warfare insignia, or "SEAL Trident."

They are trained and have been deployed in a wide variety of missions, including direct action and special reconnaissance operations, unconventional warfare, foreign internal defense, hostage rescue, counter-terrorism and other missions.

Without exception, all SEALs are male members of either the United States Navy or the United States Coast Guard.

SEAL training takes two years, and 75 percent don't make it through. Even if they do, they need years more experience in the field to even be considered for the squad sent after bin Laden -- known simply as Team 6.

The Navy SEALs originated during the Second World War when the United States Navy recognized the need for soldiers to reconnoiter landing beaches, note obstacles and defenses, and ultimately guide the landing forces in.