The vocals in the closing credits were provided by members of Rushmoor Male Voice Choir and recorded in the Q121 Wind Tunnel at Farnborough Airport (formerly the Royal Aircraft Establishment) in Hampshire. Rushmoor is the name of the Borough Council that encompasses the towns of Aldershot "Home of the British Army" and Farnborough "Birthplace of Aviation".
The ice cream cone icon among the bombing mission symbols on the plane indicates missions over Italy. It is a negative stereotype, relating to the common sight of Italians working as street vendors of ice cream.