The Operations Building (Facility 84) on Ford Island is a visual landmark in Pearl Harbor due to its International Orange and White painted tower.

The steel tower was originally designed as a water tank, with the land plane control tower for the air strip on top of it. The concrete base building was topped by the Aerological Tower, the building contained a garage for two fire engines, and housing for the fire fighters and air traffic controllers.

Phase 1 work included restoration of the Land Plane Control Tower. Many of the structural elements of the Aerological Tower were repaired, but no restoration work was completed during this phase; Phase 2 work included restoration of the Aerological Tower. All windows and doors were removed, restored, and reinstalled.  Original asbestos-containing cement board siding was replaced by new cement board siding; Phase 3 work included the renovation of the first floor of the former Operations Building to house a library, offices, male and female toilet rooms, and accessibility improvements.  

MASON recently completed a concept design for the renovations for the second floor as well as completed renovations of the Aviation Learning Center - Link Trainer Building, Facility 97, near the Operations Building.