Technician, Dr. Ernhardt and others in “Cavalcade”

[adjusting a signal] Take it to the left.

Take it back now, y'all.

Left. Left a little more.

My- My left!

Easy... Whoa! He's right on frequency!

I'm gonna take this energy home and satisfy my wife for a change.

Television programs, telephone calls, and data are going through. This one was for practice...

And gosh darn was it fun!

... for crews like this, the big task is keeping the nation's communications flowing.

Wait, this was practice? Jeff died today!