Truly one of my favorite memories as a dad ever: riding on the top of a double-decker to familiarize myself with the route to the hospital, with my trusty lieutenants in tow. At ages four and two, the idea of riding the bus with purpose, to help Mommy, who was getting ready to produce a new little sibling for them, was just intoxicating. Their little (almost) matching blue coats made them look like official little guys executing a most important task.