Hi, My brother and I were in his garage (either during thanksgiving or Christmas). We were smoking a cigarette and I noticed a flash of a purple light which lit the sky. I saw it again but this time it was blue. It changed colors several times. I told my brother to look and he missed it but finally saw the last flash of light. About five minutes later we both observed a humming or vibrating noise. I asked him to check his cell phone because it sounded like a cell phone vibrating when it's on silent. The lights lasted approximately 2-3 minutes but the buzzing lasted around 45 minutes. I got scared so we eventually went inside. It was the weirded experience ever and both of us witnessed it.