Barking Bulldog.
 
At the height of the battle, this M41 Walker Bulldog light tank was seen firing into the enemy positions. However, its bark was worse than its bite, and it seemed to be firing blanks. Photo details: Canon 40D, ISO 250, 1/1000th second exposure with a Canon EF 70-200mm IS USM lens @ f-7.1.

 Image taken January 17th 2009