In a troubling sign that Operation Epic Fury is facing serious headwinds, the United States has now lost at least four aircraft in combat over the past two weeks, including advanced F-15 fighter jets and a critical KC-135 Stratotanker refueling plane.

According to Pentagon sources and regional intelligence, two F-15 Eagles were sH๏τ down over western Iraq and eastern Syria while escorting strike packages targeting Iranian missile sites. A third fighter was severely damaged and forced to make an emergency landing. Most recently, a KC-135 Stratotanker — the backbone of America’s long-range air operations — was lost during a high-risk refueling mission supporting B-52 and B-1B bombers.

Iran-backed militias and the IRGC have claimed responsibility for all four losses, stating they used advanced surface-to-air missiles and drone swarms to exploit gaps in U.S. air coverage. The downing of the KC-135 is particularly damaging, as these tankers enable the non-stop long-range bombing campaign against Iran.

These losses come at the worst possible time. The USS Gerald R. Ford remains crippled by repeated fires in the Arabian Sea, while the USS Abraham Lincoln is reportedly repositioning after sustaining missile damage. America has already burned through more than $11 billion in precision munitions in the first week alone, with THAAD and Patriot interceptor stocks critically low and over ten major radar systems destroyed across the region.

Despite Israel’s early success in eliminating former Supreme Leader Ali Khamenei with F-35, F-15, and F-16 strikes, the war has turned into a brutal war of attrition. Iran under Mojtaba Khamenei continues to launch punishing ballistic missile barrages at Israel, while Almas-3 drones hunt IDF armor and Hezbollah rockets rain down on northern Israel.

Military analysts warn that the mounting air losses are exposing dangerous weaknesses in U.S. operational tempo. With fewer tankers available, strike frequency is declining. With fewer fighters providing escort, bombers are forced to operate at greater risk.

What was sold as a swift, overwhelming campaign to crush the Iranian regime is now revealing the true cost of prolonged conflict. As American aircraft continue to fall from the sky over Iraq and Syria, serious questions are being asked in Washington: How many more planes, how many more billions, and how many more setbacks can the U.S. afford before this operation collapses under its own weight?

Operation Epic Fury was meant to project strength. Instead, it is exposing vulnerability