Living as I did in Chesham, I well remember the USAF activity at Bovingdon as many departures flew over Chesham to route via the Beacon Hill fan marker. As well as Dakota's there were regular C119s, C123s and C130s plus the occasional C54 and USAF Stratocruiser (can't remember the number of that one!), occasionally even a C124 Globemaster. During the annual 'Open Days' we were treated to the usual re-fuelling demonstration with a KB50 towing an F100, F101 and B66 simultaneously!