From the desk of Project Blue Book Commander [REDACTED]:
Overview
Project Blue Book has encountered a number of different organizations over the years. We have encountered everything from mole people to secret societies to aliens. Recorded below are our current standings and thoughts on other organizations.
United Nations Anomalous Activities Committee
Threat: None
Relations: Healthy
Details: The United Nations Anomalous Activities Committee (UNAAC) is regarded by most among Project Blue Book as little brothers. While the general consensus is that they are a more incompetent form of us this could not be farther from the truth. According to recovered reports, the UNAAC is in the process of dealing with what they call "the anomalous". Recent studies by our scientists can't make heads or tails of some of the devices we discovered, however, the UNAAC seems to be experts when it comes to this even if they believe in backward ideas like "magic".
Military Intelligence Section XIII
Threat: Mild; Caution
Relations: Uneasy
Details: Military Intelligence Section XIII, otherwise known as Monarch Security, is a government agency of the British Government, with legal authority in the Commonwealth of Nations. MI13, as well as the British Government, do not recognize Project Book as an international entity nor a governing body due to historical tensions from the 1950s. All diplomatic discussions directed at Mi13 have been met with refusal, as such, all diplomatic discussions have been held via the United Nations.
People's Committee for the Acquisition of Anomalous Objects
Threat: Mild; Dangerous
Relations: Uneasy
Details: The People's Committee for the Acquisition of Anomalous Objects (PCAAO) is for the most part not of interest to Project Blue Book. the PCAAO and Blue Book very rarely ever interact and so we maintain an overall neutral disposition to each other. There has been a recent rise in hostilities between our 2 parties due to the ET-003 incident however diplomats are currently smoothing these issues out. If contact is with PCAAO operatives please inform the mission commander before proceeding.
RPC Authority
Threat: High; Unknown
Relations: Cooperative, but tense.
Details: The RPC Authority is the parent organization to the AEDF, which is our biggest rival for the protection of earth from space bound threats. The RPC Authority itself is an international organization dedicated to the protection of humanity from the Anomalous. Because of the fact that they have the UNAAC wrapped around their finger, they have the ability to claim any alien craft is "anomalous" and take possession of it for themselves which inevitably leads to a great deal of bureaucracy as we fight to maintain control of said space craft. Despite this they seem to share many of the same goals as Project Blue Book, including the protection of humanity from the truth of the universe.