I saw two similar stingray/manta diamond like flying crafts in two diffrent locations on 76, last night about 1045 pm and 11:00pm passing right under them on route 76. One between broad and grove exits on 76, it was just hovering in the sky as I passed underneath it and one between the last toll and the 288 bridge. Both stationary and charcoal black metallic in color. Both flashing a red and white lights on the short wings and a bright amber or white underneath of the crafts. No sound at all. I have seen bright lights high up in the sky in these locations, but not this close before. What are they?