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.
Customs Agent: Career Guide. Employed by US Customs and Border Protection, a division of the Department of Homeland Security, US customs agents, or customs and border protection officers, enforce laws related to the importing and exporting of goods into and out of the United States.