ground control

They don't have to; that's what ground control is for.

The music was transmitted to the space station by ground control.

These signs are used at airports with different areas of ground control.

An from the ground control there come back one word: "Roger."

All space flight would be directed by ground control or computers.

He and his colleagues worked out serious structural problems for ground control in Houston.

There was no ground control to talk her down.

Without ground control of any kind it was an almost miraculously good landing.

The kosmonauts had little to do anyway; ground control made all the important decisions.

The ground control- lers had waited what seemed a long time for this opportunity.