The pump: Most insulin pumps are about the size of a pager, and contain a reservoir of insulin, the pumping mechanism, battery, computer chip and screen. They are outside of the body, so they are called external pumps.
The mission of the Marine Reserve is to augment and reinforce active. Marine forces in time of war, national emergency or contingency. operations, provide personnel and operational tempo relief for the. active forces in peacetime and provide service to the community.
Reconnaissance units are the Marine Corpsâ eyes and ears on the frontline. They. are a highly trained six-man team capable of conducting specific missions in. enemy territory. The varying types of missions a reconnaissance team conducts. depends on how deep into the battlefield they are operating.