BOSTON — A United Airlines flight from London's Heathrow Airport to Washington, D.C. was diverted to Boston Wednesday after the pilot declared an emergency over a passenger disturbance, FOX News has confirmed. A female passenger aboard United Flight 923 had Vaseline, a screw driver, matches and a note referencing Al Qaeda, according to Phil Orlandella, spokesman for Boston's Logan International Airport. The flight, with 182 passengers and 12 crew members landed safely, United spokesman Brandon Borrman said. Borrman said a female passenger was spotted engaging in some "suspicious" activity, but he could not immediately say what the activity was. The...