you're watching "new day" with chris cuomo, kate bolduan and michaela pereira. welcome back to "new day." wednesday, september 18th. michaela for the five things you need to know for your new day. >> no motive known for the washington navy yard shooting. we know despite run-ins with police and a history of mental health problems aaron alexis had security clearance. residents of colorado have been ordered to evacuate as a local canal rises to historic levels. all that water has got to go somewhere. flood runoff from colorado now making its way over to neighboring nebraska. president obama's week long focus on the economy takes him to members of the business round table this morning. he's pushing congress to avoid a government shutdown at the end of the month. concert promoter aeg live expected to rest its case today in the michael jackson wrongful death trial. the defense no longer planning to call katherine jackson.