The Anson was one of those aircraft which just proved incredibly effective at what it did, like a select few other types. The Canberra outlasted its contemporaries, and the B52 will probably hit 100 years of service. Amazing to think that when the first B52 flew, cattle trains were still running on the Tralee and Dingle. The Douglas DC-3, which dates from 1943, is still highly valued by certain specialist users.