On March 11, 2003, the United States Air Force tested one of the largest conventional bombs ever built. It is called the MOAB -- Massive Ordnance Air Burst. It is a bomb designed to destroy heavily reinforced targets or to shatter ground forces and armor across a large area.

Photo courtesy U.S. Department of Defense

In this edition of HowStuffWorks, we'll examine this new high-powered bomb and see where it fits into the U.S. arsenal.