US strikes Iranian underground missile storage with 5,000-pound penetrator
By Michael Scanlon
Mar 19, 2026, 02:53 PM
A test squadron at Eglin Air Force Base, Florida, released the GBU-72 Advanced 5K Penetrator, a bunker-buster bomb, for first time in 2021. (Air Force)
The U.S. military employed 5,000-pound penetrator weapons against underground Iranian storage facilities holding coastal defense cruise missiles and related support equipment during the latest phase of Operation Epic Fury, Joint Chiefs Chairman Gen. Dan Caine confirmed Thursday.
“As reported by U.S. CENTCOM yesterday, the US military dropped 5,000 pound penetrator weapons into underground storage facilities storing coastal defense cruise missiles and other support equipment,” Caine said at a Pentagon briefing with Defense Secretary Pete Hegseth. “These weapons are bespokely designed to get through concrete and/or rocks and function after penetrating those barriers.”
Coastal defense cruise missiles, which Iran has deployed along its coastline to target naval and commercial vessels transiting the Persian Gulf and Strait of Hormuz, have been a recurring focus of U.S. strikes since Operation Epic Fury began on Feb. 28.
The munitions are consistent with the GBU-72 Advanced 5K Penetrator, a bunker-buster, which U.S. officials confirmed made its combat debut in similar strikes on hardened coastal missile sites near the strait on Tuesday, The War Zone first reported.
https://www.defensenews.com/news/your-air-force/2026/03/19/us-strikes-iranian-underground-missile-storage-with-5000-pound-penetrator/