Posture planning is a juggling act. Because posture changes can be maddeningly slow to execute and, once implemented, difficult to change, planners must have a long time horizon. Good posture planning must distinguish powerful long-term trends from headline-grabbing but ephemeral events, have sufficient breadth to capture a wide range of possible posture demands, and be robust in the face of the inevitable uncertainties about where, when, and how U.S. interests will be challenged.
Vick, Alan J., Stacie L. Pettyjohn, Meagan L. Smith, Sean M. Zeigler, Daniel Tremblay, and Phillip Johnson. 2016. "Continuity and Contingency in USAF Posture Planning." Rand Corporation. http://www.rand.org/content/dam/rand/pubs/research_reports/RR1400/RR1471/RAND_RR1471.pdf