In 1997 I lived very close to South Mountain Park, actually within walking distance. About 8:30 PM, I remember the time because I had just watched Seinfeld, my wife and I were leaving to go to my daughters condo not far away.
We headed down the street towards South Mountain, when I noticed a formation of lights in the sky coming over the mountain, in a vee shape. The shape of the lights just seemed odd so we pulled over and got out to get a better look.
The lights moved slowly, and there was absolutely no sound. As I remember there were about 6-8 lights in a vee formation. As I watched I saw the lights appear to bank over (in unison), like a plane would when they turn, and it headed towards Tucson. The lights had been observed all the way up to northern Arizona earlier that night and tracked southward.
That same night, about 10 PM there was a second event, which was later proven (although some claim it wasn't proven) to be the Maryland National Guard dropping flares over the Goldwater Gunnery Range.
I didn't have a camera with me, unfortunately.