Treason

An Independent, a Democrat and a Republican were found guilty of Treason and were sentenced to die by firing squad.

First up was the Independent. As the Sargent at arms called:
"Ready"
"Aim"
and the Independent shouts "Earthquake!!" and the firing squad ran away and he escaped.

Next up was the Democrat.
Same procedure, as the Sargent called: "Ready" "Aim"
and the Democrat yelled "Flood!!" and the firing squad ran away and he escaped.

So now comes the Republican.
Sargent at arms: "Ready" .. "Aim"
and the Republican yells "FIRE!!"

.. inspired by the "circular firing squad" comment by someone else.