2 set of lights streaking across sky from north to south.

I was outside looking at the clouds and it was raining lightly. I turned to look west and 2 separated white lights approximately 1000 feet in the air. The lights were striking across the sky for about 10 to 15 seconds. The light on top was going faster then the 1 underneath and they were traveling from north to south and then disappeared from sight.
They were not military aircraft as they have more lights on them or afterburner. My husband and I were stationed at Luke AFB for 1 1/2 years so I have seen night flights and they were just lights coming from my first seeing them until they disappeared.