The Natural State Paranormal Investigators held a training session for prospective members.

Aa group of about 30 people took to the winding halls of abandoned buildings at Fort Chaffee.

They were tracking something called EVPs, or Electronic Voice Phenomenon.

The device records noises that are not audible to the ear and not made by human voices.

They use that and other evidence such as film to track their ghosts.

Wesley Rester, the founder of NSPI, had been tracking ghosts for about ten years.

He says they use Fort Chaffee often as a training ground because it is very supernaturally active.

He adds that it's the fort's history that makes it so haunted.

The building they used is actually 154 buildings connected by a series of hallways.

During World War Two part of the building housed prisoners of war.

There is also a psych ward and a children's unit, where we visited.

And Rester says the main goal of the hunt is to provide scientific evidence for paranormal activity.

"We're not just a bunch of kids running around in the dark trying to scare ourselves. We want scientific evidence. We want people that are level headed and have a scientific mind and don't think that just because a place gives you the heebie jeebies it's haunted," said Rester.