Detailed text transcripts for TV channel - MSNBC - 20140311:09:03:00
Realistic. you have to come up with at least a rate of dissent. >> reporter: if the plane went come up on land, trabs minsmitt beacons should be sending a signal. but if it went down in the sea, black boxes should be sending a homing signal. >> these devices are designed to activate in the water. once active, they produce a brief pulse once a second for 30 days at a depth of up to 20,000 feet. >> nbc's tom costello reporting. back in this country and turning to politics, you are looking live at the senate floor. more than two dozen centers holding an all night session to bring attention to c...
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