The pilot, Cornelius van der Walt, died in a crash in Arizona that also killed three others. While the autopsy found he had ketamine in his system, it had been administered by medics after the crash.
After originally declaring that the pilot in January's fatal hot air balloon crash in Eloy, Arizona, had elevated levels of ketamine in his system, an amended autopsy released Friday said the potent drug had actually been administered as part of life-saving efforts.