The objects which the witnesses have described since the first time they have spoken on the record bear no resemblance to a lighthouse. On the first night (25/26), SSgt Jim Penniston and A1C John Burroughs encountered the strange lights and Penniston even managed to touch the UFO. On the second night the UFOs seen were equally strange.
The lighthouse looks like a faint glow on the horizon, not much bigger than Venus in the night sky. I have seen the lighthouse blinking on the horizon with my own eyes.
I have also seen the Sci-Fi channel's "UFO invasion at Rendlesham" documentary, where the lighthouse is filmed and compared to the 'Halt tape'. It turns out that whoever filmed the lighthouse did not film it from Rendlesham forest, it was very clear that the lighthouse had been filmed from a much closer location, there were only two rows of trees infront of it too.
Why? My guess is that from Rendlesham forest the lighthouse's light looks too insignificant, the viewers would have trouble seeing what the narrator was talking while watching it on a television screen. I visited Rendlesham forest in the late evening and waited until it was dark. There's a whole page devoted to my observations, which can be found here. I managed to see the lighthouse and was really disappointed:
"Within a few seconds, my eyes were attracted to a small point of light near to the farmhouse. It disappeared. A few seconds later the light flashed again – this was the Orford Ness lighthouse.
I sat on a nearby picnic table and watched as the lighthouse’s weak light flashed from time to time. At first I began smiling to myself as I thought, “how could this tiny, dim light cause USAF personnel to ‘freak out’ and think they were witnessing a UFO landing, for up to three consecutive nights? It couldn’t.”
The amusement of the situation soon disappeared and I was left feeling quite angry. The sceptics claim that the UFO story has grown over time and become more elaborate in a negative sense. In my opinion, it has “grown” for one reason only - researchers have dug deeper and uncovered more information.
But if anything has grown with time, I can assure you it is that lighthouse’s ‘beam’!
On the History Channels recent documentary on the Rendlesham forest incident, “Britain’s Roswell”, UFO sceptic James McGaha remarked, “If you’re out, a dark sky on a cold night in December, and a lighthouse is swinging through the trees, with this bright beam of light passing through the trees – it’s going to have some strange unusual effects – light is going to get scattered by the trees.”
Mcgaha seems to believe that there is some kind of beam which sweeps through the trees, and that light gets scattered everywhere – creating some kind of optical illusion. I can only assume that Mcgaha has no idea of what the lighthouse actually looks like. Let’s see what the lighthouse’s wonderful “beam” really looks like, here’s a frame from my video footage. I zoomed in almost 10x to capture this shot on my camcorder.

This animation shows two frames, one with the lighthouse off and one with the lighthouse on. The animation is 225kb and may take 10-20 seconds to load on a slower connection.

Yes, that’s right - that really is the lighthouse. The little window in the farmhouse was much bigger than the lighthouse’s so-called “beam”. You must remember that the lighthouse is almost six miles away too, you can’t seriously expect it to “swing between the trees”. I decided to forget about the lighthouse for a while and walked off deeper into the forest".
It could be argued... The lighthouse's bulb must have been different over 26 years ago, you cannot really make a comparison between the two.
Yes, the bulb has been changed, but it is actually brighter and more powerful than the old one. The lighthouse is still in the same position obviously, it is still the same colour, it still flashes at the same rate and it's brighter than ever - so I would say that it's easy to make a comparison.
With a description of the lighthouse (and the images above) in mind, let's compare the lighthouse to the descriptions of the UFO offered by witnesses. I will begin with descriptions from the first night (25/26).
Jim Penniston said the UFO was triangular in shape, he estimated that it was "three meters tall and about three meters wide at the base". He said it seemed to be made from 'opaque, black glass'. Here is a sketch of the object, taken directly from Penniston's notebook:

John Burroughs said the UFO was the size of a 'tank', it had a bank of blue lights and had supporting feet - "It was unbelievable...we got pretty close to the object, we knew it had the feet on he ground from there". He made a sketch of it soon afterwards, this accompanied his written statement.

Edward Cabansag, who saw the UFO from a distance, said that the object was conical in shape, it had a 'belt' of lights around it and crucially was to the right of the lighthouse.
"It was to the right of the lighthouse. It was cone-shaped, egg shaped, with lights running around its belt from left to right. They were blue, white and red lights, flashing, sometimes rapid, sometimes slow".
The second night and third nights (27/28) (28/29)
Charles Halt, who was the deputy base commander at the time, said that the UFO first encountered on the second night looked like a red, pulsating eye. It was pulsing as if it was blinking, again like an eye. "At this time we could see the lighthouse, it was off to the side of this object by about 30 degrees. This object was no lighthouse, it was dancing about in the forest, woods and all." Halt and Nevilles both said that the UFO appeared to be throwing off sparks, both likened it to 'molten metal'. Halt has since confirmed that the red pulsing light they observed was a solid object.
It could be argued... if there was a thick fog, the lighthouse's beam could become distorted and look much more unusual.
I suppose it may look a bit more fuzzy, but we know that both nights of the incident were clear and crisp. There was no fog. None at all.
Munroe Nevilles, who was with Halt, said, "If we looked at it through the night vision goggles it looked like a large brick. The heat was coming off it. Every once in a while it would flash, throwing off sparks."
The UFO then silently exploded, so the witnesses say, and flew off into the sky in many different parts. One of the pieces hovered over Rendlesham forest (although Halt says it was probably thousands of feet in height) and began beaming down pencil-thin beams of light down to the ground, one landed straight infront of Halt's feet.
"We could fairly clearly see it. It sort of danced about in the sky and it sent down beams of light. I noticed other beams of light coming down from the object, falling different places on the base. My boss was standing in his front yard at [RAF] Woodbridge and he could see the beams of light falling down, and the people in the Weapons storage area [aka WSA] and several other places on the base also reported the lights [beam lights]. They didn't seem to be harmful. [The beam] stayed on for about 5-10 seconds and just as abruptly as it came, it disappeared...", there's no way a lighthouse could do anything like this, or even give the illusion of doing this.
The descriptions offered by other witnesses, such as Larry Warren and Adrian Bustinza of a large rainbow coloured object sitting in the 'farmer's field' are so unusual that there is no way that they could be attributed to a lighthouse - it would be ridiculous to make such a claim.
It could be argued... the beams of light were in fact just image noise caused by Halt looking at a bright star through the group's night vision scope.
Sceptic's have occasionally used this argument to 'explain' the pencil-thin beams of light which were sent down by the UFOs in the sky. While it's completely acceptable to doubt the Rendlesham case for a specific and genuine reason, I don't think it's necessary to make-up information such as this.
As the beam shot down to the ground, Halt was speaking into his tape recorder - are we meant to think that Halt was holding a large night-vision monocular while speaking into his tape recorder?
If he was looking at a star, what would cause the beam to land at his feet?
What about Halt's boss at RAF Woodbridge, did he have a pair of night-vision goggles too?
Sgt. Robert Ball was with Halt at the time, he saw the beam too and recalled that the objects seemed to be boxing off areas with their beams and searching for something.
As Halt shouts out "Now we're observing what appears to be a beam coming down to the ground!", instead of shouting "sh*t" in reply, wouldn't the other men present enquire, "what beam?" Remember, there was only one night-vision scope.
The last two records that Halt makes on the tape both mention the objects in the sky beaming down lights:
"Lt. Colonel Halt: 3.30: And the objects are still in the sky, although the one to the south looks like it's loosing a little bit of altitude. We're turning around and heading back toward the base. The object to the...the object to the south is still beaming down lights to the ground.
[Break in tape]
Lt. Colonel Halt: 0:400 Hours one object still hovering over the Woodbridge base at about 5-10 degrees off the horizon. Still moving erratic and similar lights beaming down as earlier."
You should notice that there is a 30 minute gap between the two records, in that half-hour would it not occur to Halt that the beams of light were not visible when he wasn't using the night-vision scope? Unless the monocular was glued to Halt's eye somehow...