Watch the entire series! Good to go!
Four UFC fighters traveled to Marine Corps Base Camp Pendleton to test themselves against a rapid-fire version of The Crucible.
After 12 weeks of intense training, the United States Marine Corps puts recruits through the ultimate trial — The Crucible. For 54 straight hours, their endurance, teamwork, and leadership skills are put to the test. {YouTube}
PART I
PART II
PART III