I was sitting in a van with the doors open so that i could touch the ground with my feat. i was at a friend's house in the the industrial area of my close-knit village. as we were talking we both noticed an unidentifiable object (smaller than a plane or helicopter) in the sky, not too high from were we were, that flew by. a rather loud noise anticipated the viewing. a few seconds later at least 3-4 helicopters followed, and the interesting part of it was that they were flying really low as we could clearly see the writings under them. they were the helicopters of the firefighters, police, military, and others that i have not seen again in my life. furthermore, a few minutes later a couple of really technologically-advanced planes that i have not seen again in my life flew really high in the sky, really fast and loud. after this, there was silence, and i have not heard of anyone else who saw it or read no article or saw no news on tv.