Sam SheridanSam Sheridan joined the US Merchant Marine after high school and then attended Harvard College, graduating in 1998. He is an amateur boxer, mixed martial arts fighter, and student of Muay Thai and jujitsu. He has worked in constructin at the South Pole Station in Antarctica, as a cowboy and farmhand on the largest ranch in Montana, as a wildland firefighter in Washington State and New Mexico, as a professional sailor, and as a wilderness EMT. He has written for Newsweek and Men's Journal and is the author of three books. Read More Read Less