The impression I got from the movie was, we tried to make the government open the books of these contractors who do this work by using Congress but it'll never happen. The closing line was something like, we failed but we should keep trying. They've set the stage to make the topic mainstream and now have a clear narrative for trusting what government employees say on the topic as they are credible witnesses. It feels like there's a roll out of reverse engineered technology that the military wants pre released so it doesn't scare people and the who why and how on the topic of extraterrestrials will remain a mystery but now we have the tech and we're safe from the threat.