Updated at 1:13 p.m. ET
Los Angeles' public transit system has announced that it is the first in the U.S. to purchase millimeter wave scanners to screen Metro riders for suspicious objects as they move through stations.
The technology "will help detect weapon and explosive device security threats on the county's transit system," the system says in a joint press release with the Transportation Security Administration on Tuesday.
A spokesman for the LA Metro tells NPR that the system has ordered several units, at approximately $100,000 each.