Las Vegas sent 5 teams of firefighters  out yesterday and a 6th left this morning (5 engines and 45 firefighters). That's a total of 150 and they expect to send more.
 In addtion, about 20 or so Clark County firefighters are taking their scheduled rest leaves to head out there and help. 

According to the news reports, it's so dangerous now that only brush trucks and wildland  trained firefighters are being allowed to go.

Arizona is sending 80 firefighters. They also have 6 water planes on the runway waiting for the winds to die down enough for them to take off,