Air & OSINT · 26 September 2026 · Evening edition

Ten US F-15Es stop at Mildenhall as tracker reports smaller regional tanker fleet

Ten US Air Force F-15Es returning from the Middle East stopped at RAF Mildenhall, according to The Aviationist, while a separate open-source inventory reported a reduction in American tankers across Europe and the Middle East. The fighter report described aircraft from Seymour Johnson’s 4th Fighter Wing carrying a combined 45 Shahed drone kill markings. Those markings are not independent confirmation of the engagements, and the two reports do not establish a common reason for the aircraft movements. 1 2

Tanker numbers fall, but the inventory is not an operational readiness count

DefenceGeek’s updated inventory listed 169 tankers in CENTCOM and EUCOM: 26 KC-46As, 129 KC-135Rs and 14 KC-135Ts, a reduction of 26 airframes from its September 7 update. The account said numbers in Europe had fallen significantly and interpreted redistribution inside CENTCOM as a shift toward operations around the Strait of Hormuz and Arabian Sea. Its locations were derived from flight-tracking and communications sources, rather than an official force statement. 2

The largest concentrations in that inventory included 45 KC-135Rs and three KC-135Ts in Israel, and 17 KC-46As alongside 11 KC-135Rs in Qatar. These are the tracker’s location estimates, not evidence that every listed aircraft was serviceable or assigned to a particular mission. The post expressly described its figures as subject to change. 2

Separately, sentdefender relayed a Wall Street Journal report that US officials said President Donald Trump had rejected Iran’s proposed seven-day ceasefire and privately expected bombing to resume after the November midterms. The account also reported that the scale of any renewed strikes remained undetermined and that officials described concern over depleted munitions stocks. This was a report about a possible future course, not an announcement of new air operations; the tanker inventory does not independently substantiate it. 3

Callsigns trace transport movements through British bases

ArmchairAdml reported a C-130J, serial 19-5945 and Mode-S hex AE6960, arriving at RAF Fairford from Ramstein as HERKY 752, then departing for Ramstein later that morning. The paired observations provide a specific aircraft and route rather than an inferred mission. In a separate radio report, the account identified BLATE 13 as an MC-130J inbound to RAF Mildenhall from St. John’s, calling BANTER Ops on 300.800, while noting that it was not tracking. 4 5 6

In the Pacific, a post by AUX_OSINT relayed by MATA_osint reported that eight F-35As of the 35th Fighter Wing’s 13th Fighter Squadron had travelled from Misawa to Kadena on Wednesday. The supplied text breaks off during its description of the intermediate route, so it does not support a fuller itinerary. 7

Nordic fighters conduct a joint identification mission

Finnish and Swedish Quick Reaction Alert fighters jointly intercepted and identified Russian military aircraft over the Gulf of Finland, UK Defence Journal reported. It attributed to Sweden the description of this as the two air forces’ first joint operational identification mission. The supplied report did not identify the Russian aircraft types or establish an airspace violation. 8

The same publication reported that Britain had used its entire operational RC-135W Rivet Joint fleet on missions around Russia during the week. It also described British and allied aircraft conducting large simulated air battles over the UK during Cobra Warrior 26-2. The posts did not provide individual Rivet Joint callsigns, routes or sortie counts, and the intelligence flights and exercise should not be treated as a single operation. 9 10

Flight-alert account SkyGlass12 separately labelled RONIN25 as an E3TF aircraft off the ground near Gongju, South Korea, and recorded Australian P-8 callsign ASY197 on the ground at Hickam Field, Hawaii. These are reported detections; the alerts’ suggested surveillance missions and strategic purposes were speculative, not demonstrated by the location data. 11 12

Drone warfare brings interception footage and refinery-strike reports

Osinttechnical described footage as showing a Ukrainian MiG-29 destroying a Russian Shahed attack drone with its 30mm cannon over Odesa. The post supplies an attributed account of the engagement, not independently verified identification or geolocation. 13

The account also reported a fire at Russia’s Ilsky refinery following a Ukrainian drone strike. In a separate update on Perm, it said the refinery continued burning after the previous night’s attack and relayed Reuters reporting, attributed to industry sources, that damage to pipelines, storage and processing equipment had shut the facility down. Its broader account of the overnight raid cited local channels for claims of hundreds of drones, a scale not independently established by the supplied posts. 14 15 16

On future capacity, UK Defence Journal reported Ukraine’s statement that billions from the EU’s Ukraine Support Loan would fund drone and air-defence purchases. The short post did not specify systems, quantities or delivery dates. 17

Saudi and Houthi accounts describe strikes and interceptions

GlobalOSINTHQ relayed a Houthi claim that Saudi Arabia had conducted 27 airstrikes over the preceding 24 hours using F-15s and Typhoons operating from Khamis Mushait and Taif. The Houthis alleged that the targets included civilian bridges and roads across six Yemeni governorates. These claims about aircraft, launch bases and targets were not independently corroborated in the supplied material. 18

On the other side, a Saudi-led coalition spokesperson’s statement, reposted by lookner, said air defences had intercepted and destroyed two Houthi drones heading toward Riyadh province. That remains an official interception claim, rather than a verified outcome. 19

Weapons tests and fleet transitions advance

The Aviationist reported newly released imagery showing Castelion’s Blackbeard weapon carried by a US Navy F/A-18F during a test flight. Although the publication described the weapon as hypersonic, the supplied account establishes a report of carriage on an aircraft—not a demonstrated missile launch or hypersonic flight. Separately, an Anduril statement reposted by ArmchairAdml said the company had delivered its first collaborative combat aircraft to the US Air Force the previous month and that USAF operators were now flying Fury themselves. 20 21

Australia’s 1st Aviation Regiment was preparing a September 30 sundown ceremony in Darwin for its Tiger attack helicopters, according to The Aviationist. The publication described the event as marking 20 years of Tiger service and the regiment’s transition to the AH-64E Apache. UK Defence Journal also reported BAE Systems’ launch of a compact electronic-warfare system family intended for smaller airborne platforms, without supplying performance or deployment details. 22 23

Fatal transport crash reported in Congo; F-16 inquiry identifies engine damage

GlobalOSINTHQ reported a fatal L-410 transport crash at Kenge in the Democratic Republic of Congo’s Kwango province, naming military officers and a civilian pilot among those killed. Its wording left unclear whether the pilot was included in its reported death toll of twelve. It named Lieutenant Generals Likulia and Katalay among the dead. The supplied post offered no explanation of the cause, and its casualty account remains unverified here. 24

In a separate accident-investigation update, The Aviationist said investigators had traced a Thunderbirds F-16 crash to turned compressor vanes that initiated progressive engine damage and ultimately left insufficient thrust to remain airborne. The post reported the investigators’ conclusion without supplying the underlying investigation document. 25