This legislation mandates the Attorney General to significantly enhance the National Missing and Unidentified Persons System (NamUs) by requiring a new data field. This field will indicate whether a missing person's last known location was confirmed or suspected to be on Federal land, or if unidentified human remains were discovered on such land. It further specifies that this data field must include specific location details about the unit of Federal land involved in each case. Additionally, the bill directs the Attorney General, through the Director of the National Institute of Justice, to submit annual reports to the Committees on the Judiciary of both the House and Senate. These reports, commencing in the second calendar year after enactment, must detail the number of cases in NamUs where a missing person's last known location or unidentified remains were found on Federal land. The data is required to be disaggregated by the specific Federal land management agency with jurisdiction over that land, such as the Department of Agriculture or the Department of the Interior, to provide detailed oversight.