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.
The objective of the Reserves is to deliver supplementary support to active-duty forces, when obligated. All of the different military services have a Reserve branch under the patronage of the Department of Defense: Army Reserve, Air Force Reserve, Navy Reserve, Marine Corps Reserve, and Coast Guard Reserve.