"Yes, sir."
"Take out your ID card. Separate the two pieces of plastic. There's a flat plastic key next to the card. Open the brief case lock with it."
The voice was silent until Don, with the help of a razor blade, had done as he was directed. "All right, sir; that's done."
"Open the brief case, take out the package, open the package and put the wrappings back in the brief case."
Again the voice stopped. Don unwrapped something that looked like a flat cigarette case with two appendages, one a disk of perforated hard rubber the size of a half dollar, and the other a three-quarter-inch-wide ribbon of opaque plastic. "I've got it, sir."
"Good. What you see is a highly advanced radio transmitter and receiver. You can imagine its value in the field. It's a pilot model you were bringing back from the contractor for tests here. But this seems as useful a way to test it as any other."
"It's range is fantastic, Captain—if you're in Washington."
"I am. Now. The key also unlocks the handcuff. Unlock it. Strip to the waist. Bend the plastic strip to fit over your shoulder—either one, as you choose. Arrange the perforated disk so it's at the base of your neck, under your shirt collar. The thing that looks like a cigarette case is the power pack."
Don followed the instructions, rubbing his wrist in relief as the handcuff came off. The radio had been well designed and its components went into place as if they had been built to his measure. They tickled a little on his bare skin, that was all. The power pack was surprisingly light.
"That's done, sir," Don said.