As a general rule of thumb, anyone who wants to spare themselves or their family from the flu should get vaccinated. The flu vaccine is a mandatory individual medical readiness item for all active-duty personnel that must be completed by Nov. 30. Military, government civilians and those with a valid retired or dependent ID card can get their vaccination via flu mist, or flu shot upon indication. (U.S. Air Force graphic/Tech. Sgt. Benjamin Rojek)