LaGuardia and Boston
Logan airports affected hundreds of passengers. Andy McKechnie tweeted the whole incident in Boston while sitting in a plane on the runway.







tweeted an update in New York with a picture of people leaving the airport.

Someone else posted a picture on Instagram of the US Airways plane stopped on the runway at Boston Logan.  It arrived from Philadelphia.  It is believed that a piece of luggage that was checked but made a "banging" noise when it fell off of a loaded cart gave a baggage handler cause for concern.  The baggage was later deemed harmless but officials say they adopted an attitude calling for an "abundance of caution."

Instagram

Following the Boston Marathon bombings, all precautions are being taken at both airports.

Source: USA Today