Heavy Floods Sirens Sound Off... Live Video

Evacuation sirens in Minot, N.D., sound as Souris River begins to overtop levees

WATCH LIVE FOOTAGE: http://www.msnbc.msn.com/id/21134540/vp/43496174#43496174

Mayor Zimbelman: 500 Nat. Guard troops...door-to-door evacuations..."We will try to protect all infrastructure, schools, hospitals."