The change for U.S. Marine Matthew Callahan came when he "snapped" his leg.
It was his first deployment to Afghanistan with 2nd Battalion, 3rd Marine Regiment. He was an "assaultman," a Marine specialized in assaulting hardened positions.
He was sent to the Wounded Warrior Battalion to recover, where he picked up a camera and started On-The-Job Training (OJT) to be a combat correspondent.
"I feel being a former infantryman gives me a better perspective and will serve me well in telling the stories of Marines from the ground combat element especially. Civilians have a genuine interest in knowing about the ins and outs of Marine life and I have a genuine desire to tell them. It's incredibly satisfying and a wicked good time," Callahan told Business Insider.
He must be having fun, because in our opinion his Instagram feed — bridgingthegap__ — is one of the most fascinating in the military.
Snipers set up a snap firing position.
![](http://static2.businessinsider.com/image/51d337b46bb3f7ce28000006-400-300/snipers-set-up-a-snap-firing-position.jpg)
Watching friends rappel. Dirty as hell.
![](http://static6.businessinsider.com/image/51d337b4eab8eac266000012-400-300/watching-friends-rappel-dirty-as-hell.jpg)
Yeah, they look happy.
![](http://static1.businessinsider.com/image/51d337b46bb3f77026000009-400-300/yeah-they-look-happy.jpg)
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