I picked up the five passengers at the Matamoros airport on one of those delightful days meant for flying: scattered puffy white cumulus clouds hovering above the ground at about 3,000 feet, light breeze out of the southeast, visibility about 20 miles. My passengers had called my boss, the fixed-base operator (FBO) in Brownsville, the previous day to book the flight. Either they didn’t trust the charter operator flying out of Matamoros, or they liked our plane better. Maybe the Mexican charter planes were all booked up, who knows. When I flew the short five-minute hop from Brownsville to Matamoros, cleared ...