The camshaft. The valve train consists of the valves and a mechanism that opens and closes them. The opening and closing system is called a camshaft. The camshaft has lobes on it that move the valves up and down, as shown in Figure 5. Most modern engines have what are called overhead cams.
A Foreign Service Officer (FSO) is a commissioned member of the United States Foreign Service. As diplomats, Foreign Service Officers formulate and implement the foreign policy of the United States.
If you make it into the Foreign Service, the next stop is the Department of Stateâs National Foreign Affairs Training Center for A-100, a ten-week introduction to the Department of State and work as a Foreign Service Officer.hey serve in countless roles: from economists and health care specialists to translators and administrative assistants. Most diplomats are Foreign Service Officers (FSO). Every FSO must pass the Foreign Service Exam which consists of a written exam, an oral interview, and a negotiating exercise.