The PURSUE declassified records describe specific, measurable physical behaviors. When you run the numbers, the implied forces exceed every known limit by orders of magnitude, far past anything instrument error or rounding could account for.
Based on 330 declassified records — war.gov/ufoA Range Fouler Debrief form from USCENTCOM, October 2020, held two infrared contacts under radar lock at 16.9 nautical miles. One was circling the other — then, within a single 1/30-second video frame, both were gone. For a solid object to leave a sensor’s track that fast, it has to move at a speed nothing in the known inventory can reach.
"ONE RANGE FOULER WAS CIRCLING AROUND THE OTHER. IN 1/30TH OF A SECOND, THEY WERE GONE."Classification: Unclassified. Filed on standard USCENTCOM Range Fouler Debrief form. Released under PURSUE Tranche 1, May 8, 2026.
Enter any speed and turn radius to calculate the implied G-force. Pre-loaded with documented PURSUE observations. The formula is G = v² / (r × 9.81).
Multiple PURSUE reports describe objects accelerating from stationary or near-stationary to high speed with no apparent transition. Enter a speed change and time elapsed to calculate the implied G-force.
"[A piece] broke off and accelerated in a third direction." The document does not specify speed or time. The following presets represent plausible assumptions drawn from witness descriptions across the corpus.Witness 1, post-mission debrief, exact speed values redacted.
What the numbers in the calculators above actually mean, in physical context.
The calculators show that no known airframe or body survives these numbers. That rules out conventional flight, but it does not, by itself, rule out physics we don't yet command. Below are the credible, peer-discussed ideas for how an object could behave this way, and the catch that keeps each one theoretical. None is evidence that the documents describe craft; they are the honest answer to a narrower question: what would it take?
Every lethal number on this page is force divided by mass. If a craft could reduce its own inertial mass toward zero, the same maneuver would impose almost no G-load on its structure or any occupant: the acceleration stays extreme while the felt force collapses.
Alcubierre's 1994 solution to general relativity describes a "bubble" of contracted-then-expanded spacetime that carries its contents along while they remain locally in free-fall. Inside, occupants feel zero G no matter how the bubble moves.
Several records note hypersonic motion with no sonic boom and objects detectable only on shortwave infrared. A craft that ionizes and manipulates the air around it could, in principle, suppress its shockwave and radically cut drag, making it quiet and hard to see.
Any of the above demands enormous power from a small volume. The quantum vacuum carries a non-zero energy density (the Casimir effect is its measurable fingerprint) and is sometimes invoked as a hypothetical onboard energy reservoir.
Every figure here rides on at least one unknown. The 3,622 G headline depends entirely on an assumed separation distance; the speeds depend on assumed range; passive infrared sensors give angles, not distances. A parallax error, a misjudged range, or a sensor artifact can turn an ordinary object into an impossible one on paper. The most likely "new physics" in many of these records is the ambiguity of the measurement itself, which is exactly why the documents log them as unresolved rather than extraterrestrial.