Thomas Cruse is the Vice President of Operations for Paul Vunak's Descendants of the Masters program at fighting.net. He has appeared in more than 50 instructional videos and has trained more than 17 government agencies, including the U.S. Navy SEALs, the FBI, DEA and the United States Marine Corps. He has trained with and worked alongside Paul Vunak for more than 30 years. His first book, The Trappers' Bible, is coming soon. In this exclusive video, Cruse shows you how to train for when the fight goes to the ground. For more information on Cruse's career and affiliations, visit fighting.net.