It looked like a normal flight but their was a issue all the flights that were coming in the sky were going the direction (>) but this ufo which i thought was going opposite direcn (v) so i thought it would crash but it went so fast towards it and then after passing it it stopped about a block away from my building ( i live on 18th floor the highest in my area , so i could see it) then it just went reverse i thought whatt how and its now 1:00 am in morning and i was doing research and found this page thanks for understanding the facts i know!!