Screening devices that detect suicide vests like the one that exploded in a New York City subway tunnel are being tested in a Los Angeles transit station, but U.S. Sen. Chuck Schumer said Sunday the Transportation Security Administration should speed up plans to deploy the technology nationally. "The fact that we have this new, potentially life-saving technology at our fingertips - an ability to detect concealed explosives worn by cowards looking to do us harm - demands the federal government put both the testing and the perfecting of this technology on the fast-track," Schumer said.