This is the last photo ever taken of Marco Siffredi — just before he attempted to snowboard down Mount Everest.
On September 8, 2002, the French daredevil reached the 29,000-foot summit of Earth's highest point. Though critically exhausted from the climb and the high altitude, Siffredi stood with his board perched over the precipice and decided to forge ahead with his plan.
He strapped on a fresh oxygen tank, bid his Sherpa adieu, and began his descent — never to be seen again.
Carlos Hathcock was an American sniper during the Vietnam War.
He volunteered for a daring mission where he spent three days crawling over 2000 meters of open land to reach enemy headquarters.
With precision, he took a single shot that claimed the life of an NVA general. Hathcock then meticulously crawled back inch by inch, evading enemy patrols and searching for the elusive sniper.
By the end, Hathcock, had bed sores from staying motionless for so long.