smitty777 writes "According to the Pentagon, the 30,000-pound, precision-guided Massive Ordnance Penetrator GBU-57 bomb is just too small. Concerns around Iran's fortification of their nuclear program facilities has the DoD seeking from Congress something not quite as subdued as the GBU-57, the largest non-nuke bomb operated by the USAF. This 'smaller' bomb just recently won a prize for its ability to cut through 60 feet of concrete. The upgrades will cost $82 million on top of the $330 million spent so far to develop the system. There is some interesting high speed camera footage of the GBU-57 in the video below."