Fitness Center renovation in progress Published July 9, 2014 94th Airlift Wing Public Affairs DOBBINS AIR RESERVE BASE, Ga. -- Contractors from HCR Construction are currently performing renovations on the Dobbins Air Reserve Base Fitness Center. The building has been closed since Dec. 17, 2013. Barring any delays, the center is expected to re-open mid Nov. 2014. Members are welcomed to visit the RTI Fitness Center at the Clay National Guard Center. RTI Fitness Center 1000 Halsey Ave. Building 400 Marietta, GA. 30067 Hours: 5 a.m. to 8:00 p.m.