NASA Administrator Bill Nelson, Bulgarian Minister of Finance Assen Vassilev, and Bulgarian Ambassador to the United States Georgi Panayotov

NASA Administrator Bill Nelson, left, speaks with Bulgarian Minister of Finance Assen Vassilev, center, and Bulgarian Ambassador to the United States Georgi Panayotov, right, during a meeting at the Mary W. Jackson NASA Headquarters building, Wednesday, Feb. 7, 2024, in Washington.