Sweetwater County Sheriff John Grossnickle saw the drone-like flying objects with his own eyes as recently as Saturday night, his spokesman Jason Mower told Cowboy State Daily on Monday.

That marks 13 months of lighted, drone-like objects congregating, often in coordinated formations, over the Red Desert and power plant, Mower said, adding that they're too high to shoot down from the ground level.

"We've worked with everybody," he said. "We've done everything we can to figure out what they are, and nobody wants to give us any answers."

Mower said the sheriff took Wyoming U.S. House Rep. Harriet Hageman out to see the objects, and she watched them.

Hageman's office did not respond to an email request for confirmation and comment by publication.

The phenomena are so pervasive, and any hope of addressing them so remote, that people have stopped reporting them to the sheriff's office, said Mower.

He uses the terms "drone" and "unidentified flying object" interchangeably, noting that the objects are thousands of feet above the earth; they move like drones, but are fundamentally still a mystery.