Per the FCC web site,
http://transition.fcc.gov/fcc-bin/tvq?facid=35042 & specifically,
http://maps.google.com/?q=http://tra...26state=NV.kml, Kingman, AZ is with in the Service Contour of KLAS. That seems to support the assertion that KLAS is 'local'.
I'd at least inquire with an attorney before surrendering.