This is breaking news, from Fox in New York. Homeland Security agents are conducting sweeps of two UPS planes that have landed at the Newark and Philadelphia airports with โ€œquestionable shipments.โ€ An aiport spokeswoman in Philly told a reporter that they are looking for โ€œa possible explosive device.โ€ There are reports, unconfirmed apparently, that the plane in Newark arrived from Yemen. Developing story.