By David Heinzmann and Josh Noel
Tribune staff reporters
Several handguns have been stolen from bags checked by police officers, military personnel and others on United Airlines flights departing O'Hare International Airport, sparking concern that the weapons are loose in what is supposed to be a secure part of the airport.
Since the beginning of the year, there have been "a handful" of firearm thefts from luggage being handled by United personnel, Chicago police spokeswoman Monique Bond said. Bags containing guns also have disappeared, authorities said.
News of an investigation surfaced days after new security restrictions were placed on airports across the nation in the wake of British authorities foiling what they said was a plot to blow up U.S.-bound airplanes...