Many older (and some bolder!) will remember the RE demonstrations at Hawley, staged to familiarise Staff College students with Corps capabilities and equipments. I believe they were discontinued around 1989/90. Those who were actively involved will remember the seemingly endless rehearsals and the deep sigh of relief when their (perfect?) contribution was completed. I know from personal experience that there were plenty of incidents and funny stories, most thankfully behind the scenes. Memory fails regarding part of the demo where a bridge (either single-storey MGB or No.11/12) was lifted and flown out underslung on a helicopter (Puma? Chinook might have been overkill!). A fin was fitted to the bridge for in-flight stability. Can anyone confirm the bridge type and aircraft?