5 To 7 Silver Grey Round Objects Fly Over Base
USAF B-29 maintenance specialist S/Sgt. James C. Sparks, 6th Bomb Wing - Heavy, Walker AFB, walking between buildings #590 and T-588 saw first 1 object in the SE about 1 mile distance resembling the shadow of a landing B-29 or B-50 then as it passed overhead noticed 5 to 7 silverish grey round objects, in a half moon formation, fly at estimated 500 to 600 mph at about 5,000' in a line heading to the NW disappearing at about 1 to 2 miles.
When nearly overhead, the object on right or E broke formation by 10º further to the right.
No engine or other noise and no aircraft on flight line to obscure sound. No visible means of propulsion.