Correspondence issued by the Government Accountability Office with an abstract that begins "Effective human capital planning can enable the Department of Defense (DOD) to have the right people, with the right skills, doing the right jobs, in the right places, at the right time by making flexible use of its internal workforce and appropriately using contractors. According to the department, as of March 2010, DOD's total civilian workforce included about 718,000 full-time civilians, including more than 2,900 civilians in the senior management, functional, and technical personnel workforce (hereafter referred to as senior leader workforce). Further, DOD reported that, as of the end of September 2009, there were more than 118,000 civilians in DOD's acquisition workforce. DOD has acknowledged, however, that with approximately 30 percent of its workforce eligible to retire by March 31, 2015, and the need to reduce its reliance on contractors to augment the current workforce, it faces a number of significant challenges. For example, in its 2010 Quadrennial Defense Review (QDR), DOD stressed the need for leadership in human capital management, to improve its capabilities for contributing to civilian-led activities and operations supporting "unity of effort" in homeland security, and an appropriately sized cadre of acquisition personnel …