The Aldis lamp
at MCAS Cherry Point's (and I'd guess most) towers completely is useless during daylight hours.
Of their wartime chats by Aldis lamp, Jack, who was 20 at the time and who is now 77, said: 'I would go up to the bridge as there was nothing better to do and I would call over and talk to her for a while about anything, nothing in particular.
Stephanie Batstone and Jack Campbell hold an Aldis lamp like the one they used to communicate in Morse by during the Second World War, outside the Imperial War Museum.
Londoner Alex Bateman, who is researching a book he is producing on the famous raid, has written to the Post seeking more detailed information about the crucial role the Aldis lamp played in this unique raid that successfully breached the dams flooding t he Ruhr Valley.
Without the Aldis lamps, the raid couldn't have taken place," said 30-year-old Mr Bateman.