The meteorologist said they see it often, and mentions how a specific set of conditions makes something like this more visible.
And there's a flight track that lines up with the flight and the time.
http://flightaware.com/live/flight/A...955Z/PHNL/KPHX
A missile launch would still have to clear out all air traffic in the area, even if it was secret.
News crews make a big deal out of everything, that's their job.
More video.
http://www.necn.com/11/09/10/Mysteri...mp;feedID=4213
If it was an ICBM going up to 1200km, the contrail would have widely different intensity and colours due to different levels of sunlight reaching it.