The Emerging Threats and Capabilities is a subcommittee of the Armed Services Committee. In order to have a successful crash retrieval program there are requirements from within the government. Do you think the government would classify a crashed Non-human Intelligence (NHI) derived craft as a Weapon of Mass Destruction (WMD). There are unknown biology, pathogens, energy plants, propulsion, and potentially weapons. You would need a team of highly skilled, cleared, and connected individuals to move, transport, store, mitigate, and render these technologies safe. There exists two groups that specialize in rapid response go fast teams to mitigate the proliferation of weapons of mass destruction. That is the Defense Threat Reduction Agency (DTRA) and the Global Threat Reduction Agency (GTRA). See my post below on a more detailed analysis.