Chevron/triangle formation of lights (central white, trailing red flashing) travelling north-south over San Fernando Valley; silentThis is an addendum report to the one filed over the weekend by this resident of West Hills, Ca. re: chevron/triangle formation of lights at 10 pm local on 23 July 2002.Having filed my report, two things happened which casue me to add this addendum: 1) Today 29 July, you updated your files of reports from last week, and I have noticed that there were many other reports identical to my sighting, all at the samr time on the same day,all dscribing a large formation of lights travelling slowly north to south, with the first report from Tehachapi, and the last from Santa Monica. All these reports (including those between these two extremes) were indicating a straight north-south passage. This is significant (i.e.I'm not apparently crazy!) 2) On answering your questions and on reflection with other witnesses in my family, we DID see two fast military planes travelling the same path about 15 minutes behind (single-engine jet noise from high altitude, clear view of wings and nav light in bimoculars, my guess F-16's. I thought nothing of it till today, as in my mind I was using the mil jets as reference data to compare the other object with. In restospect, they may well have been scrambled to intercept.One reporter (from Reseda) said he got video. I would very much like to see that record. From my relative size observaion (rel to Moon diam) and now knowing it flew right over Reseda, 5 miles east of me, I geomatrically calculate a MINIMUM (depending on flat plane tilt angle) dimension of center to one trailing edge of: 150 yards. I am dumbfounded.