5 Things to Know This Morning

Sept. 18, 2013— -- Your look at the five biggest and most buzz-worthy stories of the morning.

1. Navy Yard Shooter Heard Voices, Experienced Paranoia

Details in a police report made public suggest that Navy Yard shooter Aaron Alexis may have been hearing voices and losing touch with reality just weeks before he went on a shooting rampage in Washington, D.C.

2. Obama Questions Background Checks After Navy Yard Shooting

President Obama suggested that a better background check system for American gun sales might have prevented Monday's mass shooting at Navy Yard that left 13 people dead, including the gunman.

3. Focus Shifts to Finding Missing After Colo. Floods

Rescuers helping the Colorado flood victims are shifting their focus from emergency airlifts to finding the hundreds who are still unaccounted for.

4. White House Shooting Suspect Expected to Take Plea

Oscar Ramiro Ortega-Hernandez , the Idaho man charged with trying to assassinate President Obama , is scheduled to be in court to accept a plea deal.

5. Gandolfini, Monteith to Be Honored at Emmys

The lives and careers of James Gandolfini, Cory Monteith, Jean Stapleton, Jonathan Winters and Gary David Goldberg will be honored in an extended memoriam segment during the Primetime Emmy Awards this Sunday.