Ghery: Tempus Jets is in the big Hangar 6 you visited when you were here; they and Kestrel. The FBO is moving into the nearby building which houses what WAS the original Tower which, itself, was replaced by the new tower only a few years before the NAS Base was closed.
HR
[EDIT:] Pictures from April 02, 2011, the day the NAS airport became public. We were just taxiing to #6.
#1 shows the new home of the FBO which has been in Hangar 6.
#2 shows Hangar 6. Kestrel is in the left half; Tempus Jets in the the right half.