The Department of War released DOW-UAP-D098 on August 7, and UAP Logbook published a detailed reading on August 10. The 1953 Naval Photographic Interpretation Center report examined the 1952 Tremonton, Utah film and the 1950 Great Falls, Montana film using projected frames, brightness measurements and motion plots.
The report described persistent blue-white light groups and calculated high velocities and accelerations. Its final numbered finding said the images could not be identified as natural phenomena or commonly known man-made objects, reflecting the analysts' conclusion at the time rather than a modern determination of extraterrestrial origin.
The headline figures depend on assumptions the report itself marked as uncertain. It assumed a five-mile distance, perpendicular motion and a steady camera for part of the Utah sequence. The distance was arbitrary, and the authors acknowledged that the perpendicular-motion assumption was false as a literal description.
The release also omits the original films, a requested spectrophotometric test and any later Air Force response. D098 is therefore important as a primary record of how military image analysts worked in 1953, but it does not by itself settle what the photographed lights were.