These men have done all of this in anonymity. It is standard procedure never to identify members of Team Six.
"A lot of those missions -- a majority of those missions -- are ones that the public will never know about... and that's a good thing," Smith said.
Navy SEALs toil in the dark of night, tasked with the most daring, dangerous and important missions. To become a SEAL, those men completed some of the most brutal training regimens ever devised, designed to push the boundaries of even the most able service members. Only one third of recruits eventually become SEALs.
"You have to be able to endure a lot of physical pain and sometimes emotional pain, and you just have to dig deep. It's an elite organization and so it can't be for everybody," said Paul Tharp, master chief of the Naval Special Warfare Preparatory School and a SEAL for 24 years.
"What sets SEALs apart is our diversity in terms of the environments in which we operate," said Smith, also a SEAL for 24 years. "We operate at 10,000 feet in the Hindu Kush Mountains. We operate in desert regions in Iraq and elsewhere. We operate in jungles throughout the world."
As of 2009, there were 2,500 active duty SEALs. With the expanding war on terror and missions in 30 countries, the Navy needs more, but finding young men who can meet the SEALs' standards is a challenge.
"We are not looking for cocky kids," said Senior Chief Hans Garcia, a SEAL recruiter. "The perfect person would be a candidate who is remarkably physically fit, but is pretty humble, an analytical thinker, a problem solver -- someone who is very value-oriented, patriotic, puts service above self."
ABC News' BRIAN ROSS (@brianross) , JAKE TAPPER (@jaketapper) , RICHARD ESPOSITO, ALICE MAGGIN and NICK SCHIFRIN (@nickschifrin) contributed to this report.
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