The BlackBerry, a pricey handheld wireless Internet device favored by Wall Street investment bankers and Hollywood producers, may soon be one of the most effective weapons in the arsenal of U.S. homeland defense.
BlackBerries have been issued to 10 Massachusetts State Police troopers who patrol the terminals and parking lots of Boston’s Logan International Airport. The troopers, who are tasked with randomly interviewing passengers, use the devices to send encrypted queries to federal and state databases about suspicious persons and suspicious vehicles.

