U.S. Marine Povas Miknaitis was searching a home in Afghanistan when a hidden bomb exploded a few feet away, sending shrapnel in every direction.
"The bigger pieces hit me in my head, tore out the side of my lip here, kind of hanging out," Miknaitis told NBCSanDiego.
The injuries left scars on his chin, lip and right side of his torso.
Fellow Marine Justin Henderson also has scars on his back from a crash involving a military vehicle where he was ejected.
He didn't think he'd every be able to walk again after fracturing his spine.
"I'm very happy I can walk," Henderson said.
Joshua Kumher was injured in 2005 by an improvised explosive device. "Traumatic brain injury, memory loss," Kumher said.
These wounded warriors are preparing for life after the military and that means finding a job.
A new F.B.I. program is helping them do it, by offering internships to wounded warriors who are considering a career in law enforcement.
The Carlsbad F.B.I. office is the first field office in the nation to start it up.
"It's a win-win," said Agent in Charge Scott Gicking. "They get the experience, they get the opportunity to see if it's something they want to do, but we get the resources we badly need."
The F.B.I. can't reveal exactly what the interns do at the field office because it involves investigations.
Kumher said it's good hands-on training to prepare him for his career in law enforcement.
"My goal is to finish my bachelors and go into the F.B.I.," Kumher said. "I've worked overseas keeping my family safe and Americans safe, I'd like to do it here as well."
The internships last about six months, and right now the North County Field office has four interns.
Each applicant has to undergo a thorough background check, and meet certain qualifications before being accepted.