Late one night at heli-pad 1

Late one night during bad weather, the following was heard over the radio at an airport control tower:

Helicopter Pilot: “Tower, I’m holding at 3000 over Heli-pad 1.”

Second voice: “NO!!! You can’t be doing that! I’m holding at 3000 over that pad!”

There was a brief moment of silence.

First voice again: “You idiot! You’re my CO-PILOT!”