Vacuum cannon trial and error...Success!!!
The cannon fires at about 1:08. The bang scared me enough that you can see the camera jump quite a bit. I would say it is equivalent to a .22 caliber snub nose revolver report. This was an empty can. We had about a dozen failed attempts before we actually got it working.
A Veteran is a person, who at some point in their life, wrote a blank check payable to the United States of America for payment up to and including their life.
Gene Castagnetti-Director of the National Memorial Cemetery of the Pacific in Hawaii