Brendan Marrocco lost all four limbs in 2009 to a makeshift roadside bomb in Iraq.
Last month, doctors at Johns Hopkins Hospital in Baltimore joined his muscle, bone, skin and nerves with the arms of a deceased donor during a marathon surgery.
The 26-year-old showed off his new arms Tuesday.
He says he can't wait to get back to doing regular things.
“Driving, absolutely. Driving. I used to love to drive and it was a lot of fun for me so I'm really looking forward to getting back to that and just becoming an athlete again. I'd love to - one of my goals is definitely to hand cycle a marathon, so, yeah, I would love to get back to that," says Marrocco.
Marrocco is one of only seven people in the U-S who have undergone successful double arm transplants.