 To what is the title of the story, “Silence is—Deadly” referring?
SILENCE IS—DEADLY By Bertrand L. Shurtleff Radio is an absolute necessity in modern organization—and particularly in modern naval organization. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] With him came a boatload of scientific apparatus and equipment, including a number of things that looked like oxygen tanks, which were now stored in the forward hold. This storm—" Curtis threw his arm around Nelson's dripping shoulders. "But this storm, sir!" Nelson avoided Curtis' friendly eyes and slipped out from under his arm. Nelson's estimate, I'm checking back," he declared, frowning at the two papers and hastily rechecking his own figures. With all these rocks and islets—" "Radio?" repeated the little Czech, thrusting his face between the other two, in his independent fashion that ignored ship's discipline. It will be no more than Hitler can get when Zukor Androka decrees silence over the German airways! Then he hastened to the radio room, with Nelson at his heels, and the Czech trotting along behind. I have shattered them around your ship, just as I can eventually shatter them all over Central Europe! For the next two hours, no radio messages can enter or leave my zone of radio silence—of refracted radio waves, set up by my little station on one of the neighboring islets!" If you're not talking nonsense, call off your dogs till we learn just where we are!"
 Androka’s zone of silence is used as a deadly tool against the Comerford’s crew.
 Androka’s zone of silence is used as a deadly tool against the Nazi war effort.  Androka’s zone of silence is used as a deadly tool against the Comerford’s crew.  Androka’s zone of silence is used as a deadly tool, made in the name of revenging the Czech war effort.  Androka’s zone of silence is used as a deadly tool, helping the Americans sneak up on a Nazi Islet.