training at his academy. One of such body-guarding clients is the famous Canadian singer Celine Dion. Training videos Gruner has been producing training videos for martial arts, combat skills, body-guarding, and survival techniques since 2012. He commercializes those under the various brands of "Gruner Tactical Training Academy" and "O.G Training". More recently, he has been producing a survival reality show video series under the name "Survival X" in 2018. Personal training Gruner has always kept a side activity as a personal trainer in various martial arts such as kickboxing and mixed martial arts. He usually dedicates this personal training time to competing martial artists, as well as retired champions. Athletic fashion brand He has also created his own "O.G" trademark athletic fashion brand. Several collections were produced, including "The Lone Operator" collection, and the "Pro Series" collection in 2018. Helicopter piloting Gruner is a licensed helicopter pilot, which allows him to mix this activity with film producing requirements at times. For example, he worked for ABC News in Los Angeles where he did many chase videos, and saw a lot of damages and lethal encounters. Moreover, he was also the helicopter co-pilot in the 1999 movie Storm. He regularly flies helicopters and considers it a big part of his life. For Blue Hawaiian Helicopters, he regularly flew tours on Hawaii Big Island. For Maverick Helicopters, he also flew tours over the Grand Canyon. Personal life Gruner lives in Santa Monica, California and Las Vegas, Nevada. He has one son. Otherwise, Gruner is a high energy person, who likes outdoor hobbies that require a lot of physical activity. He is frequently hiking, climbing, skiing, surfing, ballooning, sky diving, and scuba diving. As a perfectionist, he likes to practice what he shows in his movies, so his acting flows naturally, as he can show that he is actually doing the "real thing". He has been regularly maintaining his karate, boxing and kickboxing training, which he has been completing with Brazilian jiu-jitsu, wrestling and mixed martial arts. He does enjoy regularly practicing 3 to 4 hours per day with the UFC guys, as it also makes him conversant in most martial arts, and keeps him fit. Gruner considers that this allows him thereafter to be a better actor and director in his movies, as far as such martial arts are concerned. He has been regularly practicing at the shooting range or in remote