It already looks pretty bad just "highlights" deep into the GAO's report "DCAA Audits: Allegations That Certain Audits at Three Locations Did Not Meet Professional Standards Were Substantiated" (pdf). This table summarizes what the GAO found:
Notably, the GAO adds in the highlights: "Throughout GAO’s investigation, auditors at each of the three DCAA locations told us that the limited number of hours approved for their audits directly affected the sufficiency of audit testing. Moreover, during GAO’s investigation, DCAA managers took actions against staff at two locations, attempting to intimidate auditors, prevent them from speaking with investigators, and creating a generally abusive work environment."
-- Nick Schwellenbach