If you’ve driven across the Potomac River on the 14th Street Bridge more than a couple of times, then odds are you’ve seen how low the planes fly above it as they take off and land at nearby Reagan National Airport. It feels like they’re going to clip your roof with their wheels. When I make the trip, I often think about Air Florida Flight 90, which, during a blinding snowstorm, crashed into the bridge in 1982. The 25th anniversary of the disaster is tomorrow. Conservative trivia: My old boss, Linda Chavez, was on the plane that took off immediately before it.