Script to change Incident Action from New to Reviewed

I am working with DLP version 14.5.  

A report has been created where I have essentially "white-listed" known FTP sender / recipient IP addresses.  While I still want these incidents to be tracked for reporting purposes, I am trying to write a PS script that will use the report, select all the incidents, and set the status to "Reviewed - No Action Required"

Is this possible?  If so how would I go about doing it?

Thanks,

London