LOS ANGELES (Reuters) - A woman who claims she was ordered by federal airport screeners to remove her nipple rings with pliers demanded an apology from the U.S. Transportation Security Administration on Thursday.

The airlines report that as many as 90% of all passengers now present a bag to check. As a result, baggage delivery services, once pretty much limited to shipping such sports equipment as skis, golf clubs, and bicycles, are booming. "We saw our business almost double overnight," says Jeff Boyd, president of New York-based Luggage Free.

A stick of dynamite was found in the checked luggage of Howard McFarland Fish, 21, on a Continental Airlines flight in Houston. It was one of six security incidents Friday that caused U.S. flights to be diverted, evacuated or searched.