Greggo previously worked for U.S. Senator Rand Paul from 2019–2022 and was his Military Legislative Assistant. In her previous position, Greggo served as a personal representative for Senator Paul on the Senate Foreign Relations Committee and had a large portfolio of national security issues. Additionally, Greggo was a defense contractor and holds an M.A. in Defense and Strategic Studies from the U.S. Naval War College. She also has a B.A. in Political Science and International Affairs from the George Washington University.