https://www.gao.gov/assets/gao-21-319.pdf
Authors. US Government Accountability Office
Venue. GAO-21-319
How the Institute flags it
established 2 times frontier 1 time
This source carries more than one flag across the corpus. That is not an inconsistency to resolve: the same work can be established evidence for one claim and frontier evidence for another, and the flag belongs to the use rather than to the source.