Five military-style officers hold Martin Lee Anderson as one of them knees him violently in the back of the legs. The teen collapses into a heap on the dirt, where a guard twists his wrist as another grabs at his neck.

Thus it went during some of the last moments of the youth's life: punched in the arms with fists at least 14 times, kneed or kicked repeatedly, subjected to painful wrist locks, smashed and squeezed for at least 90 seconds into a pole, and apparently choked.

A nurse, hands on hips, watches but stays out of the fray for more than 20 minutes.

Through it all, the 140-pound boy remains limp. He doesn't appear to resist. His only movements: his legs writhe while officers spend long moments on top of him.

Martin's final moments at the Bay Boot Camp, contained on a grainy 30-minute videotape, were played on television throughout the nation Friday after state investigators released the video in settlement of a public records lawsuit filed by The Miami Herald and CNN.

For more than a month, his mother pleaded with authorities to show her what happened to her son. But when Gina Jones saw the video for the first time Friday, she had to turn away.

"I can't even watch the whole tape, " she said. "Martin didn't deserve this right here, at all . . . I knew my baby was in pain and I'm in pain just looking at the tape.

"Martin didn't even have a chance."

Said Robert Anderson, the teen's father: "'Why did they choke my son, beat him, kick him, put their knees all in his back? He was trying to do what they told him to do."

As they had most of the past month, officials at the Florida Department of Law Enforcement, which is spearheading a criminal investigation, declined to discuss the case. "The state's criminal investigation remains active, " Tim Ring, FDLE's regional director in Pensacola, said.

Bay County Sheriff Frank McKeithen, whose office runs the boot camp for the Department of Juvenile Justice, refused to answer questions about the tape or a controversial autopsy report released Thursday. He read a statement saying the autopsy - which says Martin died of "natural causes" - does not "change the seriousness, complexity or complications of this unfortunate incident."

"The viewing of this video will result in many questions, concerns and accusations, " he said. "We, at no time, have indicated that we believe this incident was handled correctly. As a result of these concerns, several procedural changes have already occurred."

McKeithen, criticized by black legislators who say he is showing more concern for protecting the actions of boot camp officials than for Anderson's family, refused to answer questions about what changes he has implemented.

His office released a memo, dated Jan. 6, ordering boot camp officials to "immediately stop the use of" ammonia capsules - apparently used in the incident with Martin - "for any purpose other than emergency situations, such as attempting to revive a person who has obviously passed out."

Camp guards were allowed to use "chemical agents" and "deadly force" to subdue teens. No more. The sheriff's office also released a memo, written a week after Martin's death, forbidding the use of "knee strikes and hammer strikes, " referring to the punches to the arm seen several times on the video, "unless it is for self-defense."

OUTRAGE AT REPORT

On Thursday, Bay County Chief Medical Examiner Charles F. Siebert Jr. released an autopsy report saying Martin died of "natural causes" - the result of severe internal bleeding and respiratory distress caused by sickle cell trait, a blood disorder that affects about one in 12 African Americans.