Found it!
http://www.seattlepi.com/local/artic...ed-1222900.php
But the shot that nearly took off Brett Karch's leg now leaves the fate of that tradition in the air, and that has upset some in the community.According to Karch's medical records, security guards notified police after Karch received disturbing phone calls and visits from parents and students, some of whom threatened to "break his other leg" or worse, if he didn't keep quiet about the accident. Hospital staff had to move him to a secure room where they monitored visitors.
Callers and visitors told Karch they would "make sure his other leg got blown off," and that "there would be retaliation" if the family cooperated in an investigation that could end the cannon tradition, said Mary Bissel, Karch's mother. "That's when I kind of got a little upset," Karch said.
The threats also included mention the family would be "banned from the town," Bissell said. She's been warned not to talk to a lawyer, or reporters.