"Chief of the Watch," he said quietly, not moving his gaze from the sonar screen.

Joe peered through the porthole, then turned his head again to check the sonar screen.

Austin set his coffee aside and stepped over to the sonar screen.

Coop asked, his face bathed in the blue light of the sonar screen.

Think of the crafts we saw on the sonar screen!

Montague took one look at the sonar screen and swallowed hard.

The admiral walked over to the sonar screen and stared at it without really seeing anything.

On his sonar screen, another fuzzy line of static was approaching from the west.

He stepped up to the sonar screen and put on the headset.

"We're getting close," Ramsey said as he stared intently at the sonar screen.