英国空军610中队的“喷火”Mk1A 战斗机在作战巡逻任务中飞越比根希尔，时值不列颠战役打响不久。（Spitfire IAs of 610 Squadron, Biggin Hill, in flight. Identifiable aircraft are N3289/DW-K and R6595/DW-O. Image dated 24 July 1940.）