The  ambassador , also known as the chief of  mission , is the highest-ranking  diplomat  to the host country and is the personal representative of the President. He or she is comparable to a CEO of a corporation and has to be a strong leader and a good manager. He or she is supported by a deputy, known as the deputy chief of  mission , and a team of U.S. Foreign Service Officers and specialists from the  Department of State . He or she may also be supported by representatives from other U.S. agencies, such as the U.S. Agency for International Development, the Departments of Defense, Commerce, Justice, Homeland Security, and Agriculture, among others. No matter their agency, all employees work under the direction of the  ambassador .