If you are a commercial business owner or a tenant, you can avoid a lot of unnecessary damage to your locks and doors should emergency services be needed to gain access after hours by installing a "Knox" box.  Most Fire Departments offer some type of service like this.  "Knox" is the most popular brand.  A sturdy metal box is attached or built into the building in the area of the main entrance.  You put the keys or access credentials that open as many doors as possible in this box. This box can only be opened by a High Security Key that is secured in the Fire Apparatus.   Every time the key is accessed by fire personnel, an electronic log keeps an audit trail.  Should an alarm go off in your building, emergency personnel can open the door with the key(s) you provide and don't need to break your doors or locks.  This is especially handy should the alarm be false.

            You should contact your local Fire Department to take advantage of this service if you don't already have it.  When you do have it, it is important to keep it updated whenever you have a security change such as changing your locks.