4 disk shaped flashing lights moving around Tel Aviv skiesI am working as a security man in a building in tel aviv. While i was doing my security rounds in the building. while i was up in the top floor i saw a strange bright flash moving far away through the window. i got closer to the large windows in the dark office, and after a few seconds i saw 4 flashing lights traveling in the sky in a very fast speed. They stopped in the air very quieckly and then 3 of them went in a diagonal line up and vanished, while the last one vanished in a straight line going south. The flashing lights looked like lines, and sometimes turned so i could see a kind of round disk shaped thing.