My wife and I made the mistake of taking a flight with a small plane over the Hoover Dam and the Grand Canyon with a pilot who had been drinking. We never noticed it until we were up. We kept saying to each other during the flight how thankful we were that we created wills just prior to that trip. We had two other passengers with us on that flight who could not speak english and also could not hold in their stomach contents. The combination of the small aircraft (which we had never experienced before), the pilot's condition and the fetid stench of stomach stew created a very harrowing flight indeed.