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Massive Ordnance Penetrator

Pentagon to Restock Massive Ordnance Penetrator Bombs Dropped by B-2s on Iran

Feb. 12, 2026 | By Chris Gordon
The U.S. military is moving to restock its supply of the GBU-57 Massive Ordnance Penetrator bunker-busting bombs it used against Iran's underground nuclear facilities last June, according to Air Force documents.

Air Force’s MOPs Crushed Iranian Nuclear Site. Now for a New Version

Sept. 8, 2025 | By Greg Hadley
The Air Force awarded a prototyping contract for a successor to the GBU-57 Massive Ordnance Penetrator, the hulking munition used to destroy Iran’s deeply buried nuclear development sites this June as part of Operation Midnight Hammer. 

‘15 Years of Incredible Work’: The Inside Story of the Mission to Bomb Iran’s Nuclear Sites

June 26, 2025 | By Chris Gordon
The 36-hour operation by the U.S. military to fly deep into Iranian airspace and use Air Force B-2s to drop massive bunker buster bombs on a heavily fortified Iranian nuclear complex traces its roots to the work of intelligence analysts over 15 years ago.

15 Tons of Bombs and 1 Tiny Toilet: Around the World on the B-2 Spirit

June 25, 2025 | By David Roza
A former B-2 Spirit stealth bomber pilot who flew a 44-hour mission in 2001 shares what it may have been like for the Airmen who struck Iranian nuclear facilities last weekend.

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