While they wait to be executed they come up with a plan. Right before they are to be shot, each one will yell that some natural disaster or emergency is happening to distract the soldiers and they would be able to escape.
The first man hears the captain counting down to 0, he yells “TORNADO!” As the soldiers duck for cover, he scales the wall of the prison and escapes to freedom.
The second man hears the captain counting down to 0, he yells “EARTHQUAKE!” As the soldiers duck for cover, he scales the wall of the prison and escapes to freedom.
The last man hears the captain counting down to 0, he yells “FIRE!”