John Burroughs, Nick Pope and Jim Penniston at Woodbridge's east gate
Two former USAF servicemen have returned to Suffolk, 30 years after the claims of UFO sightings in a forest.
The Rendlesham Incident took place near the airbases of Bentwaters and Woodbridge over Christmas 1980.
United States Air Force security personnel John Burroughs and Jim Penniston returned to give a talk at Woodbridge Community Hall in 2010.
"To find out there are 400 people here is totally amazing," said Mr Burroughs, who was not paid to attend.
The two security personnel were the first to report sightings of strange lights on 26, December 1980.
Sightings of strange lights were again reported when personnel went out to search the forest a day later.
UFO watchers gather at night in Rendlesham Forest in 2010
One of the many theories about the phenomena is that, once they had heard the initial UFO reports, jokers from RAF Woodbridge decided to take a helicopter out with an Apollo space capsule dangling underneath.
"I was on duty the first night and the airfield was shut down," said Mr Burroughs. "There was no aircraft activity. There was nothing going on.
"I can honestly tell you that when we were out there on the first night, there was no helicopter activity."
However, the 'practical joke' theorists/UFO sceptics say the capsule could have gone out later on, when the security men weren't on duty.
Other theories suggest it was an alien craft, something supernatural, a misreading of natural lights in the sky such as meteor showers and further confusion on subsequent nights with the 'bending' light from Orford Lighthouse on the coast.