JOINT BASE ANDREWS, Md. --   The 779th Medical Group on Joint Base Andrews (Malcolm Grow Medical Clinics and Surgery Center) and the 579th Medical Group on Joint Base Anacostia-Bolling will be open for all patient functions. However, some services may be impacted due to decreased staffing. The JBA flu vaccine drive for DOD/Tricare beneficiaries, 9 years of age and older, will still take place at the theater Oct. 1-2 from 8 a.m. to 4 p.m. The JBA flu vaccine drive will still take place at the base chapel Oct. 2 from 7 a.m. to 3 p.m.