Long triangular shape with 3 double lights 3x2. Rythmic sqeuences of lights. Moving incredbly fast or hanging in the air . It looked like that hanging object far. After while of hanging we have seen flash coming out of direction of that object, so fast thats is not possible that any plane can accelerate that fast. after some short time the second triangular object slowly moving by our ex military base aquainted to hostels. I in Poland by the airport normally by F16 tactical base and im interested in avionics and im sure the shape maybe but its movement surely is nothing that i have seen before. Week after two other people told me that in that day there were two truck of soldiers with serious faces and small portable radar walking by.