Several Flashing objects in sky

There are about 10 objects in the sky at varying distances away. Some as far as to appear like a star, then some close enough to see as though it were a plane. All of these objects are flashing white, red, and blue lights. When one flew overhead, is was close enough to see that it appeared at first to look like a plane but then possibly a diamond shape. The front was flashing white almost as if the shape of a unicorn horn. Then one side flashed blue light and the other side flashed red light. Some of the objects appear to hover stationary while other fly away. However, when one flys away, another will appear, keeping about 10 in sight consistently. They also appear to ascend quite quickly as if jumping up stairs to the sky.