Airliner "foo fighter"? Bright point of light plays with airliner.6:30 pm. I-90 west bound from Batavia, NY 10-15 min event 3 airliners leaving short contrails. Odd thing, if there were four, they would have been evenly spaced in a trailing line formation. Two ahead, a space and the third.1 ufo around trailing aircraft.Wink in and out. Very bright. Very fast. Ahead behind and around. Seemed to be "playing" around the last airliner.I cannot judge their altitude. I could roughly judge speed. If the airliners were moving at about 400 knots, then this "Bright Light object" must have been doing 1000-2000 knots to be able to dart ahead and behind and all around. I did not see it the whole time of the event as it kept "winking" in and out of view. It was extraordinarily bright. In the few minutes that I saw this happen, the first time "it" winked out and winked back into view as a bright point of light I knew it wasn't a fighter jet. Even a fighter with afterburners could not move that fast. Also about midway through the event this light danced around the airliner, again, even a fighter is not that nimble. The speed and agility and brightness and very close proximity to the airliner combined are what really caught my attention.Being the only observer, I'm approx. 40 years old. Tradesman.