Appearance / Description of Object(s)

round, dull grey . over lapped edges of hwy 101 at that point made faint humming noise

Distance to Object(s) & Altitude

Sister and family could have bounced a rock off of it

Description of Area / Surroundings

urban environment, heavy hwy traffic

Full Description & Details

This was seen by my sister and her two children next to the Marin county civic center when they were driving on a side road above hwy 101. My sister was surprized to see a huge UFO hovering low over hwy 101 exactly where I saw a similar UFO in 1967 She pulled her car over and got out to look at the motion less craft that was giving off a low hum. She was close enough that she could have bounced a rock off of it. A woman driving by in a car appeared not to see the UFO. mean while traffic was flowing under the UFO on 101 and none of the people seemed to see the UFO a few feet above them. As she watched black military helicopters showed up and the UFO begain to dodge around the sky with the helicopters after it in plain sight on a bright day. Finally the UFO flew away to the north with the helicopters after it. My sisters children also saw the UFO but no one else seemed to see it except the helicopter pilots

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

not man made

Witness Background

master in geology additional work in geophysics. retired

Other Comments

My sister is very ill but her sighting should not be allowed tofade away un noticed

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