This bill requires the Department of Defense to regularly publish detailed information about its cleanup efforts for contaminated sites, with a particular focus on PFAS (per- and polyfluoroalkyl substances) pollution. The Secretary of Defense must begin posting this information on a publicly available website within one year of the bill's enactment and update it at least annually going forward. The transparency requirement applies to all sites where the Pentagon has committed funding for environmental cleanup and restoration activities. The bill does not authorize new spending but rather mandates that existing cleanup progress be made accessible to the public through a centralized online location. This affects military installations and properties across the country where PFAS contamination from sources like firefighting foam has occurred, giving communities, elected officials, and citizens better visibility into defense cleanup timelines and progress.