Appearance / Description of Object(s)

Long and thin silver colored cylindrical craft. Smooth, even exterior. No audible sound. Could not see any distictive markings. No visible wings or tail structure.

Size of Object(s)

About a half inch across, if arm stretched out and fingers attempting to grasp

Distance to Object(s) & Altitude

Hard to calculate. I was looking up at about a 60 degree angle. Was near the peak of Mount Diablo

Description of Area / Surroundings

Large community could have seen object: Walnut Creek, Alamo, Danvile, Concord, Pleasant Hill. These smaller communities surround the solitary mountain. To the North is an Air base (Travis).

Full Description & Details

I thought it was a commercial air craft but the luminous quality of the exterior caught my eye.

The exterior appeared to be reflective and the silver orange color was most likely the sun reflecting off the skin of the craft.

It appeared to my eye to be flying at an altitude similar to that of civilian small aircraft and

seemed to be the length of a Cesna. I could not make out any wings nor running lights

(near dusk at 8:20 PST). It was moving at the rate of a small aircraft (slowly crossing the sky).

I was startled when a puff of white smoke came out the rear of the object. It was 'tear drop'

in shape and lasted 3 to 4 seconds. The object made no increase in speed.

I observed the UFO for 5-6 minutes when it became too small to see.

Can sighting be explained as any conventional man-made or natural object?

No stars were out. The moon was large and low in the sky. The UFO was heading towards the moon when it moved out of sight

Witness Background

College educated. Professional: Dentist

Views on UFOs, before and after sighting

I have seen a few shows on TV regarding UFO's and sightings. I don't read or collect any information on extraterestrial. I am actually skeptical that UFO's even exist.

Reported Sighting? 

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