Here, for your entertainment is a link to a video on YouTube of the actual firing of the cannon: http://www.youtube.com/watch?v=-8e1rRFgf04
If you listen carefully you can hear a whistling as the bowling ball rotates and the air plays against the finger holes in the bowling ball.
Several of the attendees either arrived early or stayed late to enjoy the fishing. Here is one of the wonderful streams I visited in the area;
Here is Ken Steigerwalt showing off his casting skills;
Besides the knife show/sale there were several demonstrations of technical skills involved in the knife making process, very interesting. Anyway, a great time was had by all. I hope to continue attending this great event.