Sign : Royal Air Force Upper Heyford 620th Air Base Wing.
by William J. Grimes <a href="https://en.wikipedia.org/wiki/User:William_Grimes" class="extiw" title="wikipedia:User:William Grimes">William Grimes</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
Original uploader was <a href="https://en.wikipedia.org/wiki/User:William_Grimes" class="extiw" title="en:User:William Grimes">William Grimes</a> at <a class="external text" href="https://en.wikipedia.org">en.wikipedia</a> 4 September 2006 (first version); 21 June 2012 (last version) Later version(s) were uploaded by <a href="https://en.wikipedia.org/wiki/User:Harrison49" class="extiw" title="en:User:Harrison49">Harrison49</a> at <a class="external text" href="https://en.wikipedia.org">en.wikipedia</a>