My wife and I, when we were still dating and in High School, used to cruise down to Reagan National (used to just be called National) airport on the water in D.C. We'd have a picnic and wait for the sun to go down on the Potomac. Every couple of minutes, the planes would fly overhead with a deafening scream - they felt like they were only feet above our heads (more likely a couple of hundred feet). Quite a rush...