This bomb, the GBU-57, is better known as a “bunker buster” or the Massive Ordnance Penetrator. Why is the MOP the right tool ...

The heavyweight explosive is known as a GBU-57A/B Massive Ordnance Penetrator and was designed by Boeing for the United States Air Force.

Bunker buster bombs are not battlefield munitions. They serve a very specific purpose, with potential returns far outpacing ...

The 30,000-pound Massive Ordnance Penetrator is considered by analysts to be the best shot at getting through to targets ...

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The GBU-57s, or the Massive Ordnance Penetrator (MOP for short), were carried by a fleet of B-2 bombers, marking the first time the munitions were used in combat.

President Donald Trump announced June 21 that American warplanes dropped bombs on three nuclear sites, one of them deep ...

Bunker buster bombs can go to varying depths depending on the model, from just under 2 feet with the BLU-109 to over 200 feet ...

Seven B-2 stealth aircraft dropped a total of 14 GBU-57 bunker-buster bombs on Iranian nuclear sites last weekend.

American military engineers designed the GBU-57/B bomb to devastate deeply buried bunkers without radioactive fallout. It’s the only nonnuclear weapon that can reach Iran’s hardest target ...