Four silent bright red/pink light cluster moving low SWerly over Lake Havasu City

Was sitting next to an open window when noticed BRIGHT red (2) and pink (2) lights overhead and low, no more than twice the height of our 5 story building and making NO NOISE. The four lights were clustered together and moving slowly Southwesterly.
After a few seconds and realizing this was not normal, ran into the Living Room and had wife open balcony door and we stepped outside where SHE then saw the lights as well.  I pointed out there was no noise and we watched the lights move out over Lake Havasu and disappear.  I commented that if it was a gliding plane we would see a crash as it was not high enough to clear the mountains on the CA side of the lake....no crash and we never saw the lights again.
About 15 seconds of viewing, one needed to be either directly under the lights or within 1/4 to 1/2 mile to see the globular source and at a very low altitude.  No noise to attract others' attention that may have had doors or windows open as well that 70F night.  Three total (so far) reports of lights in the sky that eve with the local police dept.