TSA modifies screening and in-flight security regulations

U.S. Transportation Security Administration (TSA) officers check boarding passes and identification cards of passengers at Ronald Reagan National Airport, near Washington, in Arlington, Virginia on December 29, 2009. Air captains aboard U.S. flights now have discretion whether to enforce security procedures prohibiting passengers from moving around the cabin of commercial flights during the final hour of the flight. TSA has also stepped up screening procedures at airports following a thwarted terrorist attack attempt on Northwest Airlines flight 253 bound for Detroit on December 25. UPI/Alexis C. Glenn