For the record; the REAL LVPD search and rescue unit can be reached at 702 828 3567. I was told this is a 24 hour line, and that calling it direct might save time versus calling 911 (for Red Rock emergencies anyway).
DO NOT call this number if you have an emergency! It is a daytime weekday office number that may be answered by a pilot or a mechanic or a secretary or not at all. It will only ADD time and confusion when you least need it.
If you have an EMERGENCY, call 911 and explain that you need search and rescue (if you do). 911 here is operated by LVMPD and your call will be quickly routed to LVMPD SAR and get the ball rolling.