Trump administration personnel changes: Homeland Security, Defense, and intelligence roles

President Trump removed Kristi Noem from her position as Secretary of Homeland Security, naming Senator Markwayne Mullin as her replacement. Separately, Fox News host Pete Hegseth was named as Trump's defense secretary, and an ousted Pentagon official was hired for an intelligence role. Additionally, Kash Patel fired FBI agents with Iran expertise, indicating significant personnel shifts in national security positions.