Police receive emergency call about UFO which turns out to be the Moon:

Control Room: "South Wales Police, what's your emergency?"

Caller: "It's not really. I just need to inform you that across the mountain there's a bright stationary object."

Control room: "Right."

Caller: "If you've got a couple of minutes perhaps you could find out what it is? It's been there at least half an hour and it's still there."

Control: "It's been there for half an hour. Right. Is it actually on the mountain or in the sky?"

Caller: "It's in the air."

Control: "I will send someone up there now to check it out."

Caller: "OK."

The mystery was soon solved, as the exchange between control and an officer at the scene, makes clear.

Control: "Alpha Zulu 20, this object in the sky, did anyone have a look at it?"

Officer: "Yes, it's the moon. Over."

(Via Neatorama.)