A brightly lit object flew silently in a straight line with apparent flames trailing it for several feetA cigar shaped object, brightly lit both inside and outside as if the cabin lights were very bright, flew slowly in a straight line at an altitude, depending on how far away it was (it was after dusk) of from 2000 to 5000 feet. I had my back to it and saw it after I stood up and turned, but others noted flames coming from the tail. It made no noise and our view was eventually obstructed by trees. There were seven people who saw this after a dinner without alcohol.((NUFORC Note: Witness is a physician. PD))