low flying 5 light chevron

i was walking down the hill from my residence in the hollywood hills with a friend. i saw 5 lights tightly grouped in a 'v' shape flying low over the trees, hugging the terrain. the lights maintained their form as they silently slid along. i didn't/don't really believe in aliens on this planet - however, i work in film and television, and know of absolutely no way to create this effect with lights or lasers, or anything else known to man..... unless it came from lasers on a satellite.... though i know the gov't has these capabilities from my military days in albaquerque, i can't imagine any motivation for the event.
Date is approximate.  PD