I saw some lights. Large in diameter one red, three white, left to right. And two sets of them fairly close together but not same position horizontally or vertically. It looked like two objects. I saw them about 7:33 pm Thursday, Jan 30, 2014 at Tucson, Az. . I was on my porch and I have a western view of sombrero peak. I am about Cortaro Rd & Thornydale. I saw them two times about 30 seconds the 1st time. I also saw commercial aircraft and it's lights the whole time I watched the unidentified lights disappear. It actually looked as if they went into a cloud, but having been able to see the commercial aircraft lights the whole time I started to doubt the cloud idea. There were clouds, but I couldn't identify any in that area. My guess at the time is that these lights were over I-10 and about the Cortaro Rd area. Never heard a noise. I left after not seeing them after about ten minutes. I went into my kitchen a few minutes after. I have the same view from there and the lights were back but only for 10 seconds or so. I didn't see anything after that. I have heard a low droaning noise for the last few days. My 84 year old mother can't hear it. It drives me crazy. I've heard it off and on for years but can only hear it in the house except this week I could hear it as I got out of my car in my driveway. I don't know if either are connected. But I haven't heard the droan since Thursday nite. I have a buddy at Yuma Mine Rd and Wade Rd. We happened to text shortly after I saw these lights. He didn't see a thing.