Two UFO’s reported in pa

At 6:57 pm est i video recorded two glowing fireballs flying @1600’ right behind one another, with constant speed 300mph right behind each other in the same pattern. Never changing altitude or course very straight in the flight pattern. We watched until they disappeared in the clouds i checked with my phones siri to check on flights above me and nothing was scheduled. As a drone pilot  these made no noise and am very familiar with drones and flights of them. This was not two drone flying the same flight pattern and speed and direction impossible.