"GAO has designated DOD support infrastructure as an area of high risk and included one key related category-installation support-as an area for potential savings. In 2005, DOD recommended to the Base Realignment and Closure Commission combining 26 installations into 12 joint bases to generate efficiencies and cost savings and, in 2010, completed this consolidation. GAO assessed the extent to which (1) DOD developed and implemented a plan to achieve cost savings and efficiencies at the joint bases, (2) joint base common standards provide a common framework to manage and plan for installation support services, and (3) DOD has a process to consistently identify and address any implementation challenges. GAO reviewed DOD policies and guidance on joint basing, visited 3 joint bases and obtained answers to written questions from the other 9, interviewed OSD and military service officials, and analyzed performance data on joint base support services."