Commanders and crew members at Whiteman Air Force Base described how seven B-2 stealth bombers carried out a 30-hour mission into Iranian airspace in what U.S. officials have called Operation Midnight Hammer, the first combat employment of the 30,000-pound GBU-57 Massive Ordnance Penetrator.
In interviews at Whiteman, Col. Josh Wiitala and maintenance and weapons personnel said roughly 4,000 military specialists across hundreds of specialties supported the operation in secrecy. Fourteen pilots, drawn from a larger cadre trained on the B-2, flew the aircraft into and out of hostile airspace and delivered 14 MOPs against two known Iranian nuclear sites, according to the accounts. Wiitala and others described the raid as a precisely choreographed effort but declined to discuss classified operational details.
Wiitala, speaking publicly for the first time since the June strikes, said the crews who were chosen had extensive experience from major exercises and repeated training evolutions. "This team had flown Red Flag after Red Flag, major exercise after major exercise," he said. He declined to disclose how much notice crews received before the mission, whether electronic warfare or other countermeasures were used, or what classified evidence underpinned assessments that the weapons struck intended targets.
According to the officials on base, 12 of the MOPs were dropped on the Fordow uranium enrichment plant, which is buried under roughly 300 feet of rock, and two were delivered against the Natanz facility. The MOPs, maintained and stored at Whiteman alongside smaller ordnance, are designed to penetrate deep underground before detonation. Weapons loaders undergo 21 days of initial training and monthly recertification to handle the ordnance, Chief Master Sgt. Frank Espinoza said.
Aircrews described mission logistics that included multiple aerial refuelings and staggered rest periods for pilots on board each bomber. Each B-2 carried two pilots who alternated 45-minute to one-hour rest cycles in cramped conditions, Wiitala said. He described the aerial refueling process — aligning within roughly 10 feet beneath tanker aircraft and hand-flying the B-2 during fuel transfers — as among the most challenging portions of the mission. Some crews carried energy drinks aboard to maintain alertness during the long sortie.
The B-2 is the only current U.S. long-range stealth aircraft capable of carrying the Massive Ordnance Penetrator, but the fleet is aging; about 20 operational airframes have been in service for nearly three decades. Wiitala said the Air Force is adapting employment concepts and that the B-21, a next-generation bomber expected to cost under $1 billion per plane, will succeed the B-2 in coming years.
Official public accounts of damage and strategic impact have relied on satellite imagery and independent analyses. Nuclear weapons expert David Albright and researchers using International Atomic Energy Agency data said in a recent assessment that the strikes left Iran without a path to produce weapons-grade uranium at its known centrifuge plants for the first time in 15 years, concluding that nearly 22,000 installed centrifuges at three enrichment sites were destroyed or rendered inoperative. The analysts cautioned, however, that uncertainty remains about how long it would take Iran to rebuild capabilities or whether undisclosed facilities exist.
U.S. officials said Israeli airstrikes degraded Iranian air defenses ahead of the mission, reducing the risk to U.S. aircraft. President Donald Trump declared Iran's nuclear program "completely and totally obliterated" after the strikes. Tehran's direct retaliation was limited: Iran launched an attack on a U.S. base in Qatar but provided advance notification to avoid casualties, and U.S. forces reported no injuries.
Many tactical and technical details of Operation Midnight Hammer remain classified, and commanders at Whiteman said they would not disclose specifics about countermeasures, timing of notice to crews, or the full basis for target damage assessments. Instead, they emphasized training, preparation and what Wiitala called a "low observable culture" of secrecy aimed at preserving mission success.
Espinoza described months and years of testing and iterative development of the MOP, saying the combat-ready variant had undergone several years of final testing. He said the bombs are maintained ready for rapid loading and employment. Maintenance and weapons teams on the base conduct regular training to ensure proficiency in the heavy ordnance's handling and loading procedures.
Wiitala characterized the operation as among the most consequential of his career and said the greatest relief came when crews returned safely. "When I knew the crews were safe, when I knew that they were in friendly airspace and they were safe. That was the biggest thing for me," he said, adding that he considered the mission a "flawless performance" by crews and the broader support community.
Independent analysts and international monitoring bodies continue to assess strike damage and the wider implications for Iran's nuclear timeline. U.S. and allied officials say they will rely on intelligence collection, forensics and international monitoring to determine the long-term effect of the strikes on Iran's nuclear program. Meanwhile, the episode has focused attention on the continuing evolution of aerial strike capabilities, the operational demands placed on stealth bomber crews, and the political and strategic contest over Iran's nuclear activities.