silver orb associated with chemtrails

I had stopped the car at a park and got out to watch planes spraying what looked like chemtrails. I had just ran across that subject on the net and waas surprised  the first time I looked up at the sky and saw what I had just been reading about. There was only one other car at the park and I asked the lady in it if she had binoculars or camera, but she didn't. She got out of the car and as we observed the 3 planes apparently spraying, we noticed a small flash of light right at the junction of 2 trails, where the trails made a large X in the sky. The flash was only momentary and we couldn't perceive what it was, it seemingly ddisappeared.  We turned our backs on that spot to follow a certain plane as it was preparing to swing back around for another flight over the city.  Then we saw, at our left field of vision, a peculiar object. It seemed to rather glide, and it maitained a consistent altitude, and it came our direction.  I became rather frightened as it approached. It was not too far away, not so high. (I have difficulty estimating distance and altitude, as I've never had a reason to do so before) At first I thought that whatever it was, it was the same thing as I'd just seen, ie. that "flash of light", though it may have been a totally different thing. As it got closer, I  could see that it appeared metallic silver, and it was perfectly spherical.  Also, completely silent.
When it reached a point that was more or less in front of us I noticed that it seemed to be exuding a purple or violet haze.  I asked the lady with me if she could see the color, but she couldn't see it. I know that as an artist I am more sensitive to color that the average, non-artist.  The color was not solid, the substance seemed to be a vapor, a mist, or like a gas.  When it just about had made a complete 180 degree parade across our field of vision, it began to ascend, rather quickly, and straight upwards.
This sighting occured on a relatively clear day. I don't use drugs or alcohol, and don't take any medicine that would interfer with perception. I can't speak for the other witness, but I did find out that she was a Christian also, and after this incident we were both frightend and we prayed together before leaving the park.
 Two days later, over my house, I watched similar planes apparently spraying.  Another silver orb seemed to appear at the X mark of the trails.  This orb I saw through my binoculars and it was at a high altitude. I maintained sight of it for only about a minute.
 I reported these incidents to the local Air Force Base, and to the local FAA district manager but no one wished to take a report.