Whether you like the term/concept or not, it's getting a lot of attention in Homeland Security circles. I'm on the outer edge of these circles, but even there, I hear it a lot. Take this new paper, for example:

There is growing interest in the subject of resilience on the part of President Obama’s Administration, as well as lively discussion regarding this issue in academic, business, and governmental circles. This article offers an operational framework that can prove useful to the Department of
Homeland Security (DHS) and stakeholders at all levels, both public and private, as a basis for incorporating resilience into our infrastructure and society in order to make the nation safer.
and

In a report to help in transitioning to a new Administration, the importancenof resilience was highlighted by DHS’s Homeland Security Advisory Council (HSAC) as one of the top 10 challenges facing the next Secretary of Homeland Security.1 This emphasis is consistent with the earlier Report of the HSAC Critical Infrastructure Task Force (CITF), which recommended that the Department “promulgate critical infrastructure resilience as the top level strategic objective— the desired outcome—to drive national policy and planning.”2
An Operational Framework for Resilience
Journal of Homeland Security and Emergency Management