This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
RAF Upper Heyford. Sign Royal Air Force Upper Heyford th Air Base Wing Original uploader was William Grimes at org en first version last version Later version were uploaded by Harrison at org en by William Grimes William Grimes en user at project William Grimes en Original upload log en Rcbutcher CommonsHelper