Hire a locksmith.

@Toan Hoang in my experience, most emergency calls are for loss of heat,water leaks, and lockouts.Lockouts are easy: tell tenants they will have to call a locksmith or place a lockbox on the property but only give out the code in an emergency.The others could be handled by the plumber.

Also one last thing if a tenant decides to hire an outside locksmith to replace all the doorknobs to each room is it legal for them to do so?

I just closed on a HUD home and the listing agent is saying I need to get a locksmith to open the house for me.  

I don't know AZ landlord/tenant laws, however this approach is very pragmatic:On the day you do your lockout, be ready to execute this plan:1) Your or your trusted rep meets sheriff or equivalent at date and time of lockout 2) Do a videotape of each room and make written notes as to contents, valuables (if any), debris and damage3) While you remain inside the property (important) your locksmith changes locks and secures4) Your "student mover" types move contents for further sorting and inventory anything of value. 5) You may wish to have portable storage (PODS) delivered for large item storage and then moved offsite.The main objective of this is to plan out in advance so that your rental is not held hostage while your rent-stealing tenants get their act together.

2) Since I have no keys, do I have the right to have a locksmith change the locks by Dec 7th, as long as I provide the tenant with a key immediately?

The keys say do not duplicate, so the local locksmith doesn't want to cut new ones.  

-Get a home depot style lockbox with keys at the property ASAP (locksmith can drop it off at time of re-keying)-Ask and check references for guys doing work for you.

I'm paying about $75/hr for handyman type work (drywall, painting, etc), I pay $120/hr for a plumber ($60/hr for a helper), and $110/hr for a locksmith.  

If any of the locks are stiff, lubricate them - my locksmith recommended "Tri Flow" spray, which I used to good effect.If the house has a garage door opener, gather all the remotes you have, tell the opener head to forget all the remotes, and then learn in the ones you have.