violations of law, or through fault or negligence, of such operators and service providers or of third parties (including airports) are not eligible for reimbursements: Provided further , That obligation and expenditure of funds are conditional upon full release of the United States Government for all claims for financial losses resulting from such actions. Report on NextGen implementation 119G. (a) In general Not later than 1 year after the date of enactment of this Act, the Administrator shall submit to Congress a report on the implementation of NextGen at commercial service airports in the United States. (b) Elements The report required by subsection (a) shall include the following: (1) The number and percentage of commercial service airports in the United States that have fully implemented NextGen. (2) The percentage completion of NextGen implementation at each commercial service airport in the United States. (c) Development of standard to determine percentage implementation of NextGen (1) In general The Administrator shall develop a standard for determining under subsection (b)(2) the percentage completion of NextGen implementation at commercial service airports in the United States based on factors that may include an accounting of efficiency benefits achieved, the degree of NextGen technology and infrastructure installed, and the extent of controller training on NextGen. (2) Inclusion in report The Administrator shall include in the report submitted under subsection (a) the standard developed under paragraph (1). (d) Definitions In this section: (1) Administrator The term Administrator means the Administrator of the Federal Aviation Administration. (2) NextGen The term NextGen means the Next Generation Air Transportation System. Federal highway administration Limitation on administrative expenses (highway trust fund) (including transfer of funds) Not to exceed $446,444,304, together with advances and reimbursements received by the Federal Highway Administration, shall be obligated for necessary expenses