From Valley News:

“Klemm, 33, last month completed Goruck Selection, a test of physical and mental guile unlike most on the planet. Relentlessly subjected to a battery of intense military-style drills issued by a rotating cadre intent on breaking participants, the course covers some 80 wooded miles — this version was in southeast Ohio — over 48 hours. That’s for those who actually endure all of the punishment.

Most don’t. Klemm did.”

Read more here.