Watch Online Free on Watchseries. Jim Wagner, one of the world's top police and military defensive -tactics instructor, delivers a step-by-step program that shows you how to defend yourself should you end up on the ground. He covers tackle defense, opponent takedowns and powerful arm strikes, and his Ground Survival course also shows you how to use your environment to your benefit, how to get back up on your feet, plus expert methods for evasion and escape.