Brendan Marrocco's story is one of bravery and heroism.

He lost both arms and legs in Iraq four years ago.  A roadside bomb blew up the Humvee the Army private was driving.

His attitude is admirable.

"I was still alive so that's really all that mattered to me," said Marrocco.

Still, life without limbs was not the same.

Marroco said, "Not having arms takes so much away from you even... your personality."

So, when doctors at Johns Hopkins Hospital in Maryland approached the 26-year-old about a double arm transplant, he didn't hesitate.

"I've overcome so much in the last four years that I'm honestly not worried about the risks," said Marrocco.

The transplant team in the operating room connected bones, blood vessels, muscles, tendons, nerves and skin.

The surgery was the most complicated and extensive ever performed in the U.S.