I have been stranded in airports for 12-16 hours twice by American Airlines. They handled it extremely poorly each time. They treated each customer as a unique problem, so after long waits in lines, they tried to re-book each person individually instead of working with the information that already had on each passenger. Priority was based only on your position in line. No vouchers were offered. Weather was blamed even though the storms had been hours before and thousands of miles away. The airline accepted no responsibility for the operational problems which caused the cancelled flights, But what bothered me most of all was that no apologies were ever given and that all of the personnel were rude, unsympathetic, and dismissive of any concerns of the stranded passengers. One of the times, I spent 16 hours in Dallas/Fort Worth Airport going to eight different gates in three different terminals with over one-hundred other stranded passengers trying to get onto another flight.