Air Canada has taken the unprecedented step of pulling a couple of retired airliners out of the desert to meet increasing travel demand both domestically and internationally. Airline officials told investors last week that two Boeing 767-300ERs will rejoin the fleet temporarily while it waits for delivery of new aircraft. The two-aisle Boeings are about 33 years old, but Air Canada spokesman Mark Galardo told Airline Geeks “there’s still some life left on them.”