"It's going to take more than two years to see what his final function is going to be," said Shores. "The good thing about Brendan is that he's an extremely adaptable person. We'll suspect he'll be using his hands for just about everything."
Everything includes swimming and biking, two activities Marrocco is looking to get back into with friends. Driving is another activity at top of his list. A black Dodge Charger currently sits in a family's garage.
"I used to love to drive and it was a lot of fun for me," said Marrocco. "I'm really looking forward to getting back to that and just becoming an athlete again."
As far as other sports, Shores says Marrocco should be able to throw a football.
"I don't think there's much we're going to keep him from doing," said Shores. "He's a young man with a tremendous amount of hope and he's stubborn -- probably in a good way. He's not going to let anyone tell him he can't do something."
Brendan's father agreed.
"He's hard headed. He's stubborn. He likes to do things his way just like any kid would," said his father. "It's those challenges that have gotten him through the ordeal."
The team of surgeons, physicians and nurses volunteered their services to make this transplant possible. The operation was donated by the Department of Defense and the John Hopkins Hospital.
"I never really accepted the fact that I'd have arms. Now that I have them, it's almost like it never happened," said Marrocco. "It's like I went back four years. I'm so happy."