What Were the Jets Overhead Saturday Morning?

There have been some impressive displays in the sky over Walnut Creek in recent days.

Of course, the big attention-getter was the flight of the space shuttle Endeavour Friday morning. The next morning, there were some jets flying by at a relatively low altitude that caused a few questions from Patch readers, including a couple who thought they might be Russian F-5 jets.

Commenters on the Calguns blog speculated it might be older aircraft refurbished by the military doing war game exercises, or vintage jets for the shooting of a period movie.

Anyone have more definitive word on what we saw on Saturday morning? Tell us in the Comments.