Post office, official mail center being moved Published Jan. 24, 2008 By 27th Special Operations Wing Public Affairs CANNON AIR FORCE BASE, N.M. -- The Post Office, Official Mail Center (BITS), and Base Records Management are moving from Bldg 1249 (their current building) to Bldg 310. Bldg 310 is located on the left as you enter the main gate - close to Outdoor Recreation. They will resume normal operations in their new offices on Jan. 28.