Tyndall AFB, FloridaMay 1961

On the morning of May 20, 1961, something unusual moved through the sky over Tyndall Air Force Base in Florida. An airman standing guard at a remote observation post spotted an orange light that seemed to hover, then dart up and down. Over the next hour and a half, the object was reported by multiple military personnel and tracked by two separate radar stations.

The sighting began around 0250 hours (2:50 a.m.) when Airman Garland L. Henson, stationed at Post Number 13 near the Drone Launch Site about three miles from the base gate, noticed a light coming out of the woods. He described it as rusty orange to bright white in color, roughly the size of a softball. The object first climbed upward, descended to tree top level, then climbed again, remaining at roughly the same altitude for about ten minutes. After that, it moved toward Henson's position and then retreated. This pattern of approach and retreat happened twice. Henson reported the sighting by radio, and his signal temporarily failed during the encounter. He said the object disappeared around 0430 hours (4:30 a.m.).

When Sergeant Cecil L. Mallett and other Air Police arrived at the scene, they also observed the light. They described it as more brilliant than a star or meteor, with apparent motions that were unusual. The object moved from northeast to southeast, alternating between rapid climbs and slow horizontal movement. Three other witnesses, Airmen Roy C. Elmore, Gary L. Kelly, and a dispatcher, gave similar accounts of the shape (round), color (orange to white), and maneuvers (up, down, back, and forth).

Radar operators tracked the object as it moved. Base Operations Dispatcher A/2C Varljen called out that RAPCON (radar control) was painting a target. A radar station called Brush Off Control also tracked an object, first reported two miles west of TACAN (a navigation aid), then it abruptly shifted to eight to twelve miles west. A fighter jet was scrambled and became airborne within two minutes. Although the pilot's radar picked up sporadic signals from the target, the pilot reported seeing nothing. The object was initially moving at two to four miles per hour, then accelerated to forty-five miles per hour, which prompted controllers to also scramble a helicopter. The helicopter crew similarly reported no visual sighting. Radar contact was lost around 0510 hours (5:10 a.m.), when the object was last seen at an altitude of five thousand feet, northeast-northwest, at a distance of twenty-five miles.

Four Air Policemen observed the object from the ground. Multiple radar stations confirmed the track. Base weather was clear with ten miles visibility. The whole event lasted approximately one hour and thirty to forty minutes, depending on which witness's timeline was used.

The Air Force's official conclusion was "probably balloon." The report notes that the position of Venus at that time (just below the horizon and rising) coincided with the reported position of the object, with a visual magnitude of minus 4.2. The Air Force suggested that an atmospheric inversion condition (warm air trapped below cool air, which bends light rays) could have caused a view of the planet to appear more spectacular and dramatic. The radar images might also have been explained by atmospheric effects. The description and motions observed were consistent with previous experience of viewing planets or stars under conditions of atmospheric refraction.

However, the file indicates that this evaluation was reached despite the simultaneous confirmation by radar from multiple ground stations and the observation by multiple witnesses. The correlation between ground-visual sighting and radar tracking at different locations, along with the object's apparent ability to accelerate to speeds much faster than a balloon, remained unexplained by the balloon hypothesis.

This case file contains 80 pages as preserved by the National Archives.