Summary: The Army relies on computers for virtually every aspect of its operations--from sophisticated weapon systems to routine business functions, such as personnel and contract management. The failure to successfully address the Year 2000 problem in time could severely degrade or disable critical Army operations. The Army has taken many positive steps to heighten awareness, promote information sharing, and encourage components to make Year 2000 remediation efforts a high priority. However, it lacks key management and oversight controls to enforce good management practices, direct resources, and establish a complete picture of its progress in remediating systems. For example, at the time of GAO's review, the Army lacked complete and accurate information on systems, interfaces, and the costs and progress of remediation efforts; had not completed interface agreements and contingency plans; and had not determined how much testing capacity was needed and available. Each of these problems seriously jeopardizes the Army's chances of meeting the Year 2000 deadline for mission-critical systems. Army officials recognize that improvements to the Year 2000 program are needed and have recently taken steps to ensure that the Year 2000 problem does not threaten the Army's ability to carry out its mission. However, until all corrective measures have been completed, the Army cannot be certain that it will successfully meet the Year 2000 challenge.