Firing Squad

A blonde, a brunette, and a redhead were preparing to be put in
front of a firing squad. The brunette walked in first and stood
against the wall with the other two looking on. The squad said,
"Ready, aim..." and on aim the brunette pointed behind them
yelling, "Tornado!" The squad turned around and the brunette
fled over the wall to safety. Next the redhead stood in and at
"aim" she pointed and yelled, "Hurricane!" The squad turned
around and the redhead fled to safety. By now the blonde had
caught on, at the word "aim" just point and yell out a natural
disaster. So the blonde stepped in and at the word aim she
quickly pointed and yelled, "Fire!"