This is a definitive, firm-fixed-price contract awarded by the Department of Veterans Affairs (VA) to Varian Medical Systems, Inc. for ARIA and Eclipse maintenance services. The $521,692.25 contract has an ultimate completion date of September 30, 2016 and was awarded on July 1, 2015. Varian is a leading provider of radiation therapy equipment and software solutions, and has extensive experience supplying federal agencies like the VA, Defense Health Agency, and National Institutes of Health. This contract is part of the VA's National Acquisition Center Radiation Therapy Next Generation Program, a $120 million multiple-award contract vehicle focused on modernizing the VA's nationwide oncology infrastructure. Varian has received numerous sole-source awards from the VA and other agencies due to its proprietary technologies and specialized expertise in radiation oncology. This contract does not have a set-aside designation.