Looking back at the mishap that cost him the top third of his left ring finger, Maj. Sang Kim said he's done a little "armchair quarterbacking" to see what he could have done better.

Ironically, he made a conscious effort to avoid an injury to his ring finger by leaving his wedding ring at home when he deployed. He said he never wears his ring on the flight line because of all the horror stories he's heard about how dangerous it can be if it catches on something.

That said, he claims he did make one mistake.

"I should have gotten a step ladder to reach the toolkit," he said. "The trailer was damp and slippery that day, and I was wearing a new pair of boots, which were also slick. Maybe if I'd used a ladder, I wouldn't have slipped."