RedactedNarrative: According to all information gathered, two subjects both age 15 were tubing behind the vessel.  The tube went airborne at some point and both teenage males fell off.  subject1 went into the water first and subject2 landed on his head.  Subject1 was face down in the water and unconscious when operator returned.  operator  was able to get the subject into his vessel and he began to have convulsions.  911 was called and EMS personnel met operator at Mary Alice Park.  subject2 received no injury.  subject1 was transported to North Fulton Hospital.