Just because one is off having fun does not make one immune to disaster. Disasters are not a reason not to do what one always does.
Nevertheless, this seems so wrong to me. A twister hitting a mall, or a home, or even a playground, wouldn't feel like this, though the loss of lives would be just as terrible. I guess we all want there to be someplace which is secure from certain things. Tornado + Boy Scout Camp is one of those combinations I just don't want to see in print, don't want to think about happening.
Prayers for all concerned.