The Whirlwind Mk 10's of 22 SAR Sqdn were fitted with fuel jettison valves, this came in handy when we were presented with the Wilkinson Sword of Peace in the mid sixties. We had to clean the hangar floor at St Mawgan to hold the parade, a Whirlwind was moved around the empty hangar and at intervals the jettison was operated to pour avtur on the floor and we followed up with stiff brooms and wellies to clean the floor, it worked. Health and Safety, never heard of it!