At Stallion Site, a two-man army patrol in a jeep saw an orange, "apparently controlled," luminous object on the ground near the site of the first A-bomb explosion. It was first seen as a sunlike source 50 meters above ground, descending to ground level after three minutes, and landing several kilometers away at the northern end of the testing grounds.

One orange ball, about 300 feet across, dozens of miles away, was observed in overcast weather by two experienced male military witnesses near a nuclear test site for three minutes.

Ruppelt's account:

At 2:30A.M. on Sunday morning, only a few hours after the "Thing" raised havoc around Levelland, an army military police patrol was cruising the supersecret White Sands Proving Ground in New Mexico.

Here is their report as they gave it to Air Force UFO investigators:

"At approximately 0230, 3 November 1957, Source, together with PFC ------, were on a routine patrol of the up range area of the White Sands Proving Ground when Source noticed a 'very bright' object high in the sky. This object slowly descended to an altitude estimated to be approximately 50 yards where it remained motionless for about 3 minutes, then it descended to the ground where the light went out. The object was not blurred or fuzzy, emitted no vapor or smoke. The object was in view for about 10 minutes, and Source estimated that it was approximately 2 or 3 miles away. It was estimated to be between 75 and 100 yards in diameter and shaped like an egg. Source stated that it was as large as a grapefruit held at arm's length. The weather was cold, drizzling and windy, and Source stated no stars were visible. After the light went out Source and PFC ------ continued north to the STALLION SITE CAMP and reported the incident to the Sergeant of the Guard who returned to the area but failed to find anything."

Google map of this location.