Defense Critical Infrastructure Program (DCIP) is a Department of Defense (DoD) risk management program that seeks to assess, and prevent the potential and actual loss of Defense Critical Assets (DCA) and Task Critical Assets (TCA).
In practical terms the people assigned to this task go out and find the weak points within both the immediate military environment (for instance the utility switching station that supplies X base with power), to the more esoteric (the one factory within USA that builds the logic circuit needed to construct air-to-air missile type X). In theory it than tells the key decision makers of these issues and they use this information to guide their actions.
A non-classified presentation on this program can be found here: link1
The initiating directive is found here: link2
It is hard to get a handle on the verbiage at times, but essentially this is one of the primary proactive programs that the DoD uses to avoid problems before they occur. So when thinking up hypothetical disaster scenarios in one’s mind, it is important to understand that even if nothing has obviously been done with regards to some future disaster scenario, it is not necessarily because no thought was given to it.