A few pictures of Warbirds that took part in the Air Show at Naval Air Station Valkenburg (NL) in June1990. Hans was present and watched the starting-up of the B-25 Mitchell of the Duke of Brabant Air Force from close-by.
On the 13th of September 1997 the Marinevliegkamp (R.Neth. Navy Air Base) Valkenburg opened its gates to the public. Frank and Hans both attended this air show , which appeared to be the last significant one held at this location , as the base was closed down a few years afterwards.