Fighters over Seattle?

A Reddit user in South Bellevue reported observing multiple fast-moving aircraft flying in formation over the Seattle area on July 31, first a group of four, then the same or a different group of four, followed by a group of three that appeared to be circling. The poster noted that none of these aircraft appeared on ADS-B tracking services, a detail consistent with military formation flights rather than civilian traffic. While the original post offers no confirmation of aircraft type or unit, the timing and location point strongly toward Blue Angels or other military demonstration team practice flights ahead of Seattle's annual Seafair air show, which is traditionally held over Lake Washington in early August. Formation training and rehearsal flights in the days leading up to Seafair are a well-established local phenomenon, and residents in Bellevue, Mercer Island, and other communities bordering the lake routinely report seeing and hearing jets in the preceding week.

For working pilots, the absence of an ADS-B return is the most operationally relevant detail in this report. Military aircraft frequently fly with ADS-B Out either disabled or configured to broadcast non-discrete or blocked identifiers, particularly during training, air show rehearsals, or operations near sensitive areas, in accordance with DoD and FAA policy allowing military "special use" of ADS-B for security reasons. This means that apps like FlightAware, Flightradar24, or ADS-B Exchange, which many GA pilots and enthusiasts rely on for situational awareness, will not reliably show fast-moving military traffic even when it is operating in the same airspace as civilian aircraft. Pilots transiting Class B or nearby Class E airspace around Seattle-Tacoma during air show workup periods should expect additional traffic that will not be visible on cockpit ADS-B displays or portable traffic apps, reinforcing the enduring importance of see-and-avoid and monitoring appropriate ATC frequencies rather than assuming a "clean" traffic display means clear skies.

More broadly, this kind of report highlights a recurring friction point between increasing public and pilot reliance on ADS-B-based traffic depiction and the reality that a meaningful subset of high-performance military and government aircraft remain deliberately absent from those feeds. As business jet and airline crews increasingly cross-check traffic using consumer-grade ADS-B tools in addition to TCAS/TAS and ATC advisories, incidents like this serve as a reminder that these tools have blind spots, especially near military training areas, TFRs for air shows or VIP movement, and DoD installations. Operators flying into or through the Seattle area in the days surrounding Seafair should check NOTAMs closely, as the FAA typically issues temporary flight restrictions over Lake Washington during the show itself and practice periods can generate unpublished but locally known surges in military traffic.

Finally, the episode is a small but illustrative example of a broader trend: aviation enthusiasts and the general public increasingly use crowdsourced platforms like Reddit to report and crowdsource explanations for unusual aircraft activity, often faster than official channels confirm it. For pilots and dispatchers, these reports can serve as an early, informal indicator of upcoming TFRs, air show rehearsals, or military exercises worth confirming through official NOTAM and TFR searches, even though the anecdotal nature of such posts means they should never substitute for verified flight-planning sources.