Pilot Theo Chesley Encounters UFO

Theo Chesley has spent nearly 40 years flying in Alaska and has heard thousands of stories about strange sights in the sky.

While flying over Mount Shishaldin in Alaska, Chesley spotted a disc-shaped object in the sky.

However, he remained a skeptic all these years, until he had his own run-in with the unexplained in 2019.

Chesley was flying by Mount Shishaldin, an active volcano on Unimak Island.

It is the highest mountain peak of the Aleutian Islands within the state.

"The morning in late October 2019, we had a normal charter flight from Standpoint direct to Dutch Harbor with three passengers aboard," Chesley told the History Channel.