Collegedale Academy has been on lock out since early this afternoon, meaning no one is allowed to enter or leave the school building. This began when the school was notified that Southern Adventist University was on lockdown due to a possible threat.
Officials have been investigating the threat there, and a suspect is reportedly in custody. Parents have been notified of the situation through mass phone calls and texts.
Local news is also following this situation.

Update 2:13pm: The lock out is over at CA.
2:25pm: The lockdown is over at Southern.
3:13pm: Shots were not fired, and the threat was given to Southern by phone calls.