The TechFar Handbook suggests that the Government should be intimately involved with the Agile process:
As part of its responsibility, the Government is involved, at a minimum, at critical decision points in each sprint cycle – at the requirements development phase and sprint cycle review, but it is preferable to have daily involvement from the Government Product Owner, and frequent involvement from end-user representatives.
Essentially, the Government should be involved in the prioritization of the backlogs, the release and sprint planning events, and at the sprint and release reviews. This is in alignment with the Agile Manifesto that states that we value, ” Working software over comprehensive documentation”; and the related principle “Working software is the primary measure of progress”.