By Keith Reed, The Boston Globe Knight Ridder/Tribune Business News
Dec. 5--The luggage-screening machines used to check for explosives at Logan International Airport have been plagued by technical problems that have cost more than a million dollars to monitor and could compromise security, according to an internal Transportation Security Administration document obtained by the Globe.
The machines, manufactured by L-3 Communications Security and Detection Systems of New York, sometimes generate incomplete images, have relatively small openings that can