e: TRAILS IN SKY...RALEIGHRaleigh here..........hate to spoil the conspiracy but RDU is a HUB which means a lot of planes take off one after the other early in the morning and early in the eveningWhen the moisture in atmosphere is just right, the CONTRAILS are more noticable and stay in place longer when the wind aloft is light.......The reason they are in patterns is because most of the jets are