The aircraft was conducting aerial refueling missions tied to the ongoing U.S. strikes on Iran when the crash occurred. The U.S. military said the incident involved another aircraft but was not caused by hostile action or friendly fire. Officials said the circumstances surrounding the crash remain under investigation.

Three of the airmen were assigned to the 6th Air Refueling Wing at MacDill Air Force Base. The Defense Department identified them as Major John A. Klinner, 33, of Auburn, Alabama; Captain Ariana G. Savino, 31, of Covington, Washington; and Technical Sergeant Ashley B. Pruitt, 34, of Bardstown, Kentucky.

The remaining three airmen served with the 121st Air Refueling Wing at Rickenbacker Air National Guard Base. They were identified as Captain Seth R. Koval, 38, of Mooresville, Indiana; Captain Curtis J. Angst, 30, of Wilmington, Ohio; and Technical Sergeant Tyler H. Simmons, 28, of Columbus, Ohio.

U.S. officials have not released further details about the sequence of events leading to the crash as the investigation continues.

The estimate, presented to members of Congress on Tuesday, represents only a partial accounting of the costs incurred since the military campaign began on Feb. 28 with coordinated U.S. and Israeli airstrikes on Iranian targets.

The White House has not publicly released an overall assessment of the war’s cost or provided a timeline for how long the conflict might continue.

Several congressional aides said the administration is expected to submit a request to lawmakers for additional war funding in the coming weeks. Estimates discussed among officials suggest the request could reach about $50 billion, though some aides cautioned that figure may underestimate the eventual cost.

Members of Congress will likely be required to approve any additional funding package as the Pentagon seeks resources to sustain operations and replenish weapons stocks used during the campaign.

Administration officials told lawmakers that roughly $5.6 billion worth of munitions were expended during the first two days of strikes alone, underscoring the intensity of the opening phase of the campaign.

Some lawmakers have voiced concern that the pace of weapons use could strain U.S. military inventories at a time when defense manufacturers are already working to expand production capacity to meet global demand.

Last week, Trump met with executives from seven defense contractors as the Pentagon explored ways to accelerate replenishment of critical weapons systems and other military supplies.

Democratic lawmakers have called for public testimony under oath from administration officials to clarify the strategy and objectives of the war, including its expected duration and Washington’s plans for Iran once active combat operations end.

Speaking during a visit to Kentucky on Wednesday, Trump said “we won” the war but indicated that U.S. forces would remain engaged until operations were completed.

The conflict has expanded beyond Iran’s borders into Lebanon and has disrupted global energy markets and maritime transport routes. Around 2,000 people have been killed so far, most of them in Iran and Lebanon, according to figures cited in the briefing.