; (C) the ability of the agency to adapt an updated or modernized legacy information technology system to changes in policy, technology, or other user needs, as necessary; and (D) the effect that updating, modernizing, retiring, or disposing of a legacy information technology system of the agency that is connected to a non-legacy information technology system would have on any such non-legacy information technology system. (c) Publication and submission to Congress Not later than 30 days after the date on which the head of an agency submits the modernization plan developed under subsection (a) as part of the information resource management strategic plan of the agency submitted under section 3506(b)(2) of title 44, United States Code, the head of the agency shall submit the modernization plan to the Committee on Homeland Security and Governmental Affairs of the Senate, the Committee on Oversight and Accountability of the House of Representatives, and each congressional oversight committee of the agency. 5. Role of the Office of Management and Budget Not later than 180 days after the date of enactment of this Act, the Director, in coordination with the Administrator of the Office of Electronic Government, shall issue guidance on the implementation of this Act, which shall include— (1) criteria to determine whether information technology qualifies as a legacy information technology system for the purposes of compiling the inventory required under section 3(a)(1); (2) instructions and templates to inform the compilation of the inventory required under section 3(a)(1), as necessary; (3) instructions and templates to inform the compilation and publication of, and any subsequent updates to, the modernization plans required under section 4(a), as necessary