[Updated at 11:10 p.m. ET] Storm-battered Joplin, Missouri, continued search-and-rescue efforts Wednesday, three days after a killer tornado tore through the city of 50,000 people.
Even as cleanup crews with frayed nerves sifted through the rubble, twisters and severe weather churned through America's heartland. More than 60 Oklahoma counties were under a state of emergency Wednesday due to a tornado watch.
The power of a top-scale EF5 tornado, with winds of 200 mph, was nowhere more evident than in Joplin, a city at the intersection of Kansas, Arkansas and Oklahoma.
[cnn-video url="http://www.cnn.com/video/#/video/us/2011/05/26/natpkg.joplin.closet.cnn"%5DOn Tuesday, residents and business owners literally picked up the pieces as they reflected on the twister that has killed at least 125 people and left more than 1,500 unaccounted for.
 Full-body imaging machines that see through clothes have significantly improved security in airports where they are deployed, and have revealed more than 60 "artfully concealed" illegal or prohibited items in the past year, the Transportation Security Administration says.
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