; and (2) consider volume from seasonal surges, other projected changes in commercial and passenger volumes, the most current commercial forecasts, and other relevant information. (d) Report on Workload Staffing Model updates As part of the Annual Report on Staffing required under section 411(g)(5)(A) of the Homeland Security Act of 2002 ( 6 U.S.C. 211(g)(5)(A) ), the Commissioner shall include information concerning the progress made toward meeting Office of Field Operations officer and support staff hiring targets, while accounting for attrition. (e) GAO report If the Commissioner does not hire the 500 additional Office of Field Operations officers authorized under subsection (a) in fiscal year 2020, or in any subsequent fiscal year in which the hiring requirements set forth in the Workload Staffing Model have not been achieved, the Comptroller General of the United States shall— (1) conduct a review of U.S. Customs and Border Protection hiring practices to determine the reasons that such requirements were not achieved and other issues related to hiring by U.S. Customs and Border Protection