At 3:20 am I noticed a few lights flashing and as it got closer it was like a rapid flashing of the light starting with dim lights then getting brighter (red, blue and white). As the craft got closer it would stop and hover and then it would just begin to sound as if it shut itself down because the noise went away, then as it would start to move again it would sound like about ten planes when they fly low. So for about a half hour it would seem to get further away but disappear totally but you could still see the lights flashing. After seeing this for 1 hour there appeared a second one of the same kind! They looked almost like the depiction of the ships in the movie Independence day.....the way the ship would hover was like on a tilt and then it would go back to being straight. At times the ship would get bright and then the lights would fade away the two of them continued to hover over the same spots each one of them taking turns going back and forth from one end to the other. Drifting over the Hudson iRiver and they were lower than a plane would normally be but it would get brighter ocassionaly as it got lower to the ground...it never landed though but I stayed up for the whole thing and as it got later and closer to sunrise it just disappeared. Nobody in the house would wake up though as if they couldn't hear me banging on the door to try and wake them up.