"For a decade and a half the focus of defense strategy and operations has been shifting, with an 'expeditionary' mindset gradually replacing an emphasis on 'defend in place.' Moreover, since 2001, the 'expeditionary' concept has become the basis of the national defense strategy for waging the global war on terrorism. The expeditionary strategy is associated with operational concepts requiring rapid force application once a decision is made to engage. Rapid force application, in turn, demands the timely arrival of air, maritime, and land forces in the combat area so that their combined effects result in early seizure of the initiative and the build-up of momentum to defeat the enemy swiftly in major combat operations or to achieve objectives in other operations. The ability to project joint forces over great distances is a basic strength of the U.S. military. In the past, however, the speed of force projection has not been as critical to campaign success and the achievement of U.S. national security objectives as it is today. In this report the task force identifies the future mobility capabilities needed for rapid force projection (deploying joint forces to an operational area) and sustainment (supporting deployed forces and other entities that will participate in a campaign)."
Terrorism Research Center: http://www.terrorism.com/