NB:During WW2 ,RAF Hadstock,was less than 300yards away,behind photographer's position.
see http://en.wikipedia.org/wiki/RAF_Little_Walden
see http://www.stedmundsbury.gov.uk/sebc/visit/warbases-commassoc.cfm
see http://www.controltowers.co.uk/L/Little%20Walden.htm