sentences:  The Royal Canadian Air Force at the Canada Aviation Museum in Ottawa honoured Canada's participation and commemorated the 60th anniversary of the Battle of Britain on 17 September 2006.Modern aircraft performed a flypast along with four World War II planes provided by Vintage Wings of Canada who made a "once-in-a-lifetime formation".To mark the 70th Anniversary of VE Day, a flypast of 56 historical aircraft was performed over the National Mall in Washington, D.C. on May 8, 2015.