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.
(State Department image, U.S. Embassy Tripoli). When U.S. diplomats negotiate a treaty, attend a state dinner, or arrange a visa for a traveler to the United States, they all have the same missionâto represent the interests and policies of the United States.Beyond that, diplomatsâ roles and responsibilities are immensely varied.oreign Service Officers are professional, trained diplomats who represent American interests abroad under the direction of the ambassador. All Foreign Service Officers listen to and observe what is going on in the host country, analyze it, and report to the ambassador and Washington.