10/11/12 Phoenix, AZ Sphere 30 sec Yellowish-orange flashing sphere seen by myself 10/12/12While I was out patrolling my security post, I spotted a very bright amber orb coming out of the clouds to my southwest, from the general directions of the Estrella Mtns. It was about as bright as say, maybe 1/5th of a full Moon-or brighter than any star in the Big or Little Dipper, say. It made a semicircle almost overhead, then went SE towards the City of Tempe, then vanished in the clouds. It would make 3 graduatingly brighter flashes, then dim-down again, while in flight. I did attempt to photograph it, but my celphone couldn't catch it due to the general lighting of the area. I am a trained observer. I've been a security officer, at least P/T for almost 34 years. I also have a Bachelor's in Geoscience from UNLV, as well.