A great spring day Sunday, 15C (60F) and sunny for a POTA CW activation of the Diefenbunker Cold War museum, about 30km (19 mi.) from downtown Ottawa. The building sits on giant shock absorbers and is covered by earth. It was built in the early 60s to house Canadian officials in the event of a nuclear strike by the Soviet Union. Missiles were not accurate at the time and the building could survive a strike that was not too close. Accuracy has improved since then, making it obsolete.