Sure. I also did a stint as a paratrooper for about four years. In 2000, I was involved in a vehicle mishap over in Bosnia, and the next five years after that, with the military lifestyle, running with a pack on your back, boots, hard ground, sleeping on the cold ground, it was all cumulative. I was having a few issues before that with my back, but when you're young and you think you're fairly fit....
On June 5th, 2018. See this statement in context.