Department of Defense (DoD) installations are both globally distributed and geographically specific. As a result, DoD installations face a diverse and evolving array of challenges with implications to mission that are known and some that are unknown. This, the first of two sessions (Installation Resilience II), will begin with a discussion of the definitions of resilience and will, in addition, examine the concepts of regime shift and the implications that a return to the initial state may not be possible or even an optimal end-state. From this perspective, the session review research activities currently being pursued to understand resilience and regime shift as well as reviewing projects that are observing regimes shift. From this vantage point, the session will transition from science to engineering to examine systems that are being developed to increase the resilience of specific systems or infrastructure.