PAID ADVERTISEMENT. NO FEDERAL ENDORSEMENT IMPLIED. Functional Fitness Class Registration Chievres Fitness Center - Chievres Air Base Bldg. 20004 Google Map Chievres Fitness Center Chievres Air Base Bldg. 20004 Contact Tel: +32 (0)6827-5643 Military DSN Tel: (314)361-5643 Form requests links have (temporarily) been disabled at this time. Patrons should utilize phone numbers provided or stop by the facility for additional information.