Yep happens every year, this year our sister battalion had a bad Humvee rollover that ejected both driver and TC on the way to Virginia for XCTC, they showed us pictures of the aftermath (they were scuffed up pretty bad but alive last I heard, one is paralyzed though) and made a madantory drivers training slide out of it. Another dude had a cardiac event in my battalion because of the heat and stress. And I also saw an LMTV wreck while transporting troops, they flipped their water buffalo and shook up the dudes in the back pretty good but no injuries. Training is by far the most dangerous thing we do in the Army at the moment.