The Defense Department, in its push to better prepare U.S. forces for irregular warfare, is recalibrating a key analysis tool used to consider trade-offs between different weapon systems and force structure in the budgets of the military services. The Joint Staff and the Office of the Secretary of Defense have commenced work on a new round of Operational Availability assessments -- dubbed "OA-07" -- aimed in part at assessing the adequacy of the U.S. military's forces, training and equipment to...