Having a new phone with 4 k capability it was a sunny blue sky day an i felt the urge to go out an video even though it was 0 f degrees. i started by filming a plane heading east likely to jfk which i often watch and track on a phone app which i was not this day. within a minute or so i was immediately drawn to a shiny object that i figured was another plane. not looking thru my screen to the object i immediately noticed it was 2 round figures front to rear moving east s-e i moved my phone over to record it keeping my eyes fixed on the objects the entire time of video. i was totally dumbfounded not sure what it was then the rear object suddenly darted west from moving east with other object as it continued going east. the second object went a good distance west an held a constant distance from the first. then it darted back the other direction toward the first one rite up to it like when i first saw them then it passed over or under an was in front of it an by that time it had passed from my view with the roof in my way. i ran to the end of the balcony to look for them again but lost sight. i have to say i wish i had tried to keep better focus an camera on the objects but i was so amazed what i was looking at with my eyes an them moving i did not want to take my eyes off. the video is in slo mo which i wasn’t aware of. not sure if that’s bad or good but you can see the 2 dots moving in lower left of video in slo mo.