US Defense Secretary Pete Hegseth (L) and Chairman of the Joint Chiefs of Staff Air Force Gen. Dan Caine (R) turn to watch a video of a bombing test of the GBU-57A/B Massive Ordnance Penetrator (MOP) ...
The GBU-57 MOP is the world’s most powerful non-nuclear aerial munition, packing 5,342 pounds of lethal high-explosive inside its 30,000-pound bulk. The bomb is so heavy that only the B-2 and the B-52 ...
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What is the GBU-57A/B 'Bunker Buster' Bomb? 30,000-Pound Non-Nuclear Weapon US May Use Against Iran
The United States deployed its most formidable conventional weapon —the GBU-57A/B 'Bunker Buster' bomb or Massive Ordnance Penetrator — in 22 June 2025 strikes against Iranian nuclear facilities. This ...
A Boeing GBU-57 Massive Ordnance Penetrator in testing. Credit: Defense Department For the Defense Threat Reduction Agency (DTRA) and the U.S. Air Force, devoting the time and money to build an ...
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