The GBU-43 is the largest non-nuclear bomb in the U.S. military's arsenal. It's so large, it has to be carried in the cargo hold of a C-130 military plane and then rolled out the back door.

The 30,000 pound munition, equipped by the U.S. B-2 Spirit stealth bomber may be the only aerial bomb that can reach Iran's Fordow nuclear site.

The GBU-57 and its predecessor, the GBU-43 (popularly known as the "Mother of All Bombs"), have set benchmarks in deep-penetration munitions. India's indigenous version aims to go further.

The GBU-57 Is One of America’s Most Expensive Bombs Of course, modern munitions are not cheap—and specialized high-precision weapons are even more expensive.