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.
Diplomats come from many different backgrounds, yet they all work to advance American interests abroad. They serve in countless roles: from economists and health care specialists to translators and administrative assistants. Most diplomats are Foreign Service Officers (FSO).