(Salem, OR)  --  Things are getting back to normal at three Salem-area schools today after reports of an armed teen prompted a lockdown yesterday.  The Keizer Police Department responded to McNary High School yesterday morning on reports of a teenager running through the campus parking lot with a small rifle and a bat.  Police placed McNary and nearby Keizer Elementary and Cummings Elementary on lockdown while investigating.  Police say they were unable to find anyone matching the suspect's description.  Normal operations resumed at all three schools after about an hour.