But who is the mysterious stranger leering over the trailing edge ?
Could it be:
(tried pinching pic off Google - wouldn't play !)
CHAD ! or
KILROY ? (No,
not Nutloose or Buster !)
saying:
"If these are the Beverley Sisters, bring 'em on !" 
(tried again - success !)
Engraving of Kilroy on the WWII Memorial in Washington DC
EDIT: Of course ! It was only a helmet all the time ! (
My eyes are dim, I cannot see, I have not brought my specs with me).
Apologies all round - (retires in confusion). D.