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Congressional Research Service (CRS)
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Congressional Research Service (CRS)

Non-partisan research Arm of the US Congress; Independent source of verified data on military operations.

The Congressional Research Service had counted 42 US aircraft lost or damaged in the Iran conflict through 20 May 2026, 24 of them MQ-9 Reapers, when Iran's Revolutionary Guard claimed another Reaper kill on 26 May.

Last refreshed: 11 November 2026

Key Question

Why does the CRS aircraft count matter more than the Pentagon's own figures?

Timeline for Congressional Research Service (CRS)

#24 10 Nov
#109 26 May
View full timeline →

Background

The Congressional Research Service entered the Iran conflict record as the source of the most authoritative Independent count of US aircraft losses: 42 aircraft lost or damaged through 20 May 2026, including 24 MQ-9 Reapers. The figure stood behind coverage of the Islamic Revolutionary Guard Corps's 26 May claim to have shot down another Reaper and fired on an F-35 and a surveillance drone, claims the US military did not address. The Pentagon had not published a cumulative loss figure, so the CRS total gave journalists and lawmakers a baseline from Congress's own non-partisan research body.

CRS is the research Arm of the US Congress. It was established in 1914 as the Legislative Reference Service and renamed in 1970. It sits within the Library of Congress, with about 600 policy analysts, attorneys and subject experts. It writes confidential and public reports for members and committees across every area of federal policy, and it does not advocate policy.

Its guides on House procedure also inform coverage of Congress itself; Lowdown drew on one when House Republicans chose Jim Jordan as minority leader on 10 November 2026.

Common Questions
How many US aircraft have been lost in the Iran conflict?
The Congressional Research Service logged 42 US aircraft lost or damaged through 20 May 2026, including 24 MQ-9 Reapers. CENTCOM did not publish a cumulative figure. On 26 May, the IRGC claimed to have shot down an additional MQ-9, which would make 25, a claim CENTCOM did not confirm.Source: CRS via Lowdown Iran Conflict 2026 Update #109
What is the Congressional Research Service and who does it work for?
The CRS is the non-partisan research Arm of the US Congress, established in 1914 and housed within the Library of Congress. It employs around 600 analysts and produces objective policy analysis for members of Congress and committees. It does not advocate positions and serves all members regardless of party.Source: Library of Congress
Is the Congressional Research Service independent of the Pentagon?
Yes. CRS is a sub-agency of the Library of Congress serving the legislative branch. It has no operational relationship with the Pentagon or CENTCOM and no incentive to shade military data in favour of the executive. In the Iran conflict, its aircraft-loss count was the only figure not produced by The Administration.Source: Congressional Research Service mandate
Source Material

Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Updated 11 November 2026. Editorial standards.