At least one contract appears to be for the air force's effort to move secure workloads to a multi-cloud environment. Based on publicly available slides, I think Accenture is acting as a middleman to avoid dependence on Azure or AWS technical support creating lock in to their clouds.

IMHO firing Accenture is probably a good move in this case. I bet they were extracting money at every opportunity just so the gov't could nominally avoid cloud vendor lock-in.