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.
Each branch of the military has a Reserve component and the Reserve are under the command of their respective military branch (e.g., Army Reserve are under the command of the Army). The purpose of the Reserve is to provide and maintain trained units and qualified persons to be available for active duty in the armed forces when needed.