Facing the Firing Squad

An Englishman, Scotsman and Irishman were due to face a firing squad. 
The Englishman was first to be lined up against the wall. 

As the soldiers raised their rifles and took aim he shouted "Avalanche!". 
The soldiers instinctively turned around to look and by the time they 
realised it was a hoax, the Englishman had made his escape. 

The Scotsman prepared to meet his doom. Just as the soldiers raised 
their rifles and took aim, he suddenly shouted "Flood!". Again, 
they turned around to see what the problem was and by 
the time they realised it was a hoax, the Scotsman had
escaped. 

Finally, the Irishman had to face the music, but he was
greatly impressed by his cunning colleagues and was determined 
to come up with a similar diversion. 
So as the soldiers raised rifles and aimed, he shouted "Fire!"