He grunted again and spoke into his command circuit.

Brisk music was being played over the command circuit now as part of morale-sustaining.

We've heard nothing on the command circuits we monitor.

Krentel, meanwhile, had been on the command circuit with base.

"They're trying to close the route," he snapped over the command circuit.

Buccari closed her eyes as the pilot flipped on the command circuit.

"Buffalo, this is Six," the troop commander called in over the command circuit.

Why is he on the command circuit instead of my Commander?

The boats undoubtedly were armed and well within range, but someone on the command circuit must have been curious.

And I freed your command circuits so that you can run them without waiting for my orders to do something.