Matt Brown spent his career inside the national security world without ever wearing a uniform. He came up through grad school and think tank work in DC, earned a TS/SCI clearance, and landed in the Office of the Secretary of Defense for Policy working the counter-WMD mission. From there he moved to the State Department. In August 2023 he walked into a Senate committee, signed his real name, and became a whistleblower on UAP. His report on a program called Immaculate Constellation was later entered into the congressional record. Today he co-runs Vanguard Enterprise, a nonprofit built to support the people who came forward after him. This conversation covers what pushed him over the edge. He says he saw transcripts showing the director of the Pentagon's UAP office was not telling senators the truth. He explains how the counter-WMD mission gave him a legitimate reason to see collection on objects around nuclear assets, and what he saw on those systems, from small orbs going in and out of water to a large triangle and a boomerang that disappeared behind its own light. We cover the reality of blowing the whistle inside the IC, the retaliation he describes, and the questions he thinks Congress should be asking now.