If the kids are 15 they should know better....so they will be convicted of stupidity. That wouldn't make it any less of a sad and unfortunate situation but that would be a very difficult decision on what to do if it went down in a matter of seconds and your heart was pumping a million beats per second!....that why I thinly stress drills with firearm situations are great. TDI and Xe provide some good ones....(or did at one time)...but its all in the hands of 12 people.....12 that may hate guns!