Slept (briefly) in a Sea King left hand seat once (15 Sep 78 - North Atlantic)) as the Non-flying pilot. In scoring the winner in injury time I kicked the yawpedals....waking the flying pilot....and the rest of the crew.....whereupon the back seat uttered the immortal words "sweep complete no echos" followed by "prepare to jump"; and the crew broke dip and carried on with its night search for 'Red October' as though nothing untoward had happened - not even mentioned in the debrief.