Kelvin 'Sgt. Mac' McFarland: Boot Camp Video Emerges Detailing Abuse Of Teens (Warning: Graphic Video)

Warning: The below video is graphic and might not be appropriate for children.

Two disturbing videos have emerged that show shocking and abusive treatment of kids at a Pasadena teen boot camp. The videos come courtesy of the Pasadena Star-News and further the case against Kelvin "Sgt. Mac" McFarland, who was arrested on May 27, 2011 under charges of "kidnapping, child abuse, false imprisonment, extortion and unlawful use of a badge," reports the Pasadena Star-News.

In the video above, McFarland and other instructors scream and yell at what looks like a pre-teen boy as he is forced to hold a heavy car tire. The boy is brought to his knees as he cries and is terrorized by the adults around him.

McFarland's May arrest sparked much controversy. CBS has more on what lead to the arrest:

Officials say he spotted a 14-year-old girl downtown cutting school. Pasadena police say he approached the girl, insinuated he was a police officer and handcuffed the girl. In addition, police say McFarland then demanded money from the parents to provide his boot camp/after school services.

And yet, many clients of McFarland's came to his defense. Friends and supporters rallied to his defense, reports Altadena Patch, speaking out about "how important the program was to their children."

The video below chronicles teen participants at McFarland's boot camp being forced to drink water until they vomit. McFarland has not seen the videos but admits he is aware of their existence. He tries to deflect some blame by calling out a former colleague: "If you look at that video, you will see Keith 'Sarge' Gibbs in the video," Pasadena Star-News reports.

Keith Gibbs and McFarland both served in the military and used to work together at Gibbs' boot camp. Yet in 2009, McFarland left to start a competing boot camp in Pasadena called the Family First Growth Camp. Gibbs tells the Pasadena Star-News that the split occurred when McFarland "failed to pass a background check and allegations emerged of inappropriate training methods."

As for why the boot camp activities were filmed, investigators have yet to find out.