Airlines flying to Florida offer all kinds of gimmicks to attract the customers, but their advertising has so far failed to note an increasing phenomenon: the free, hijack trip to Cuba. In recent months, seven planes have been hijacked and forced to fly to Havana. Last week, for the third time in a month, it happened again. Five minutes after National Airlines Flight 28 left Tampa Airport bound for Miami, two tipsy Cuban exiles pulled out pistols, forced a stewardess to unlock the pilot's cabin and began shouting at Captain Clarence Delk: "Havana! Havana!
Havana!" Captain Delk changed course and...