I'm not sure about this report because it was witnessed by my son, who was driving an 18 wheeler at the time. I am hoping perhaps someone here can shed some more light on this for us. My son was driving through Pennsylvania with his co-driver. Suddenly he noticed a black square in the sky. It was like a black square hole in the sky. It was not like a craft, but a "hole". Clouds were moving past it, but it was not moving at all. He had seen another of the "holes" in another state, but I can't remember which state it was. It was all within days of each other. About 2 years ago, another of my sons experienced a sighting of a rectangle box shape black "fog" crossing the highway he was diving on. Several witnesses were present then because they all got out of their cars and watched this "thing" cross the highway. It was approximately 3 to 3 and one half feet tall, and approximately 12 to 14 feet long. It was lying on its side, floating across the highway. People noticed that you could not see the lights from the cars through it. This occured around 10:00PM (22:00) and was on Hwy. 69 South of Lufkin Texas. At the same exact time, my sister was traveling on Hwy. 69 NORTH but was just about 15 miles south of Tyler Texas at the same time, and saw another one of these things crossing the highway there. The exception in this case was that it was standing lengthwise and crossing a 4 lane highway, leaving the highway and traveling out of sight into a pasture. This sighting happened at about the same exact time the other one did, but they were 85 to 100 miles apart. Neither my son nor my sister told anyone else about the event, until they told me at different times. I had to tell them about the other one seeing it too. I think what my truck-driving son saw is the same things that my sister and another son saw except that the truckdriver son saw them in the sky and across the country from each other. I think the first one he was was near Washington State or Montana. What are they?((NUFORC Note: Location in Pennsylvania unknown to us. PD))