The lights were in close formation, quickly shifting and creating patterns/designs, then appearing to dissolve into each other.

As I was hiking up a hill at Veterans Oasis Park, I noticed an ever-changing formation of lights that at first appeared to be aircraft taking off from Williams Gateway Airport. Initially, they appeared to be a squadron of jets with more seeming to lift off the earth joining the airborne collection. The lights were different sizes, but close together. Then, in 2 groups, they formed  similar/identical formations: like the shape of 2 stars, or child's toy jacks; followed by a vertical double-helix-like formation, all the while, smaller lights appeared to coalesce into the bigger lights. within 1-2 minutes, all craft had been subsumed into the larger ones and all disappeared.