This is based on an actual radio conversation between a U.S. Navy
aircraft carrier (U.S.S. Abraham Lincoln) and Canadian authorities
off the coast of Newfoundland in October, 1995. (The radio
conversation was released by the Chief of Naval Operations on
10/10/95 authorized by the Freedom of Information Act.) 
Canadians:  Please divert your course 15 degrees to the South to
avoid collision. 
Americans:  Recommend you divert your course 15 degrees to the
North to avoid a collision. 
Canadians:  Negative.  You will have to divert your course 15
degrees to the South to avoid a collision. 
Americans:  This is the Captain of a US Navy ship.  I say again,
divert YOUR course. 
Canadians:  No, I say again, you divert YOUR course. 
Americans:  THIS IS THE AIRCRAFT CARRIER USS LINCOLN, THE SECOND
LARGEST SHIP IN THE UNITED STATES' ATLANTIC FLEET.  WE ARE
ACCOMPANIED BY THREE  DESTROYERS, THREE CRUISERS AND NUMEROUS
SUPPORT  VESSELS.  I DEMAND THAT YOU CHANGE YOUR COURSE 15  DEGREES
NORTH--I SAY AGAIN, THAT'S ONE FIVE DEGREES NORTH--OR
COUNTER-MEASURES WILL BE UNDERTAKEN TO ENSURE THE SAFETY OF THIS SHIP. 
Canadians:  This is a lighthouse.  Your call.