i have not seen the ufo's but i have seen the reddish/brown 'rust' colored clouds,however,rarely.perhaps 2 months ago i saw a rather small rust colored cloud along with some white fluffy clouds.It stood out like a sore thumb.It dissipated and i saw a strange event.There was a white jet that was flying maybe 4 miles high and it went behind the area where the cloud once was and it disappeared.Now i must add that the cloud was maybe 1 mile high so there was a long distance from the cloud and the jet plane.Now mind you,it didn't dawn on me what i had just seen until fifteen minutes or so later.i see this happening as being stealth.technology is amazing.