There's a chance of that. But there's always a chance of getting hurt in any job.
I started out a skinny kid who was constantly in trouble with the law. Im from Cali and had barely ever travelled. I went all around the country, and to Germany, Italy, Austria, Amsterdam, Czech, Korea, and some other places. Hooked up with exotic women. Drank exotic dranks. Ate exotic food. Lifted exotic weights.
And in the end I get free college for me, free college for my son, healthcare for both of us, and I get paid a monthly retirement more than some people make working.
Its not a small decision to serve your country. There's a reason only 1% of people do it, but there are benefits. I know a lot of people who did 4 years for the free college and picked jobs that translate well. One of my friends was an air traffic controller. Did his 6 years, got free college, and got out making 80k off the bat.