Homeland security officials are warning airlines that terrorists are building shoe bombs. There has been a shoe bombing attempt before. Richard Richard, also known as the Shoe Bomber, tried to detonate an explosive device hidden in shoe during a flight from Paris to Miami on December 22, 2001. He was subdued by passengers and the flight ended up landing in Logan International Airport in Boston. It was a frightening incident where a terrorist attack was averted thanks to the flight attendants and passengers.
Removing your shoes has become a standard part of airport security ever since Richard Reid's attempt to blow up a plane. Reuters says
the warning is about planes headed for the U.S.
reports that no specific plot has been identified. Take a look: