3 saucers spread out above a sunset cloud, then 1 minute later, 4 of the same in formation over Lockheed Martin for 1 minute

I was taking pictures with my cellphone from my deck of clouds at sunset. I only looked back at my photos yesterday. There were 3 white saucer objects scattered in the sky, and 9 minutes later, 4 of the same saucer objects, in formation, 2 on the left, and 2 on the right, 1 above the other, at the top edge of an orange cloud. A 3rd photo and video 1 minute later, and they were all gone.
This all occurred almost right over the Lockheed Martin building at the base of the front range of the Rocky Mountains here in Denver.