Yes CCDC aka Clark County Detention Center (aka Las Vegas County Jail) is a jail in downtown Las Vegas where I did my kitchen slave labor recently on a 90-day sentence for basically jaywalking.
If I were to be sentenced for more then a year, I would have been sent to a prison somewhere in the boonies of Nevada away from Vegas.
The OP discussed a "3-year jail sentence", and I simply explained that would not be possible as jail and prison are significantly different institutions with very different implications.
I don't think I am wrong to continually express the difference between the two.