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.
HSIâs International Operations Division is the Department of Homeland Securityâs largest investigative presence overseas. Division personnel serve as liaisons to governments and law enforcement agencies across the globe and work side-by-side with foreign law enforcement on HSI investigations overseas.