We don’t know the ages and it sounds like this is about a 6 or 7 month period of time. (I read 1 report that said since Spring, so who knows)
Tinker is a logistics base. Aircraft maintenance, which is a great deal more than turning wrenches on bolts. The base manages the AWACS fleet and the airborne command post fleet.
It is therefore a base loaded with civilians. Civilian Air Force employees. Every maintenance manual for every piece of equipment gets written by those civilians.
These can be all ages, well into their 50s, certainly older than the military people on the base.
It is just outside Oklahoma City and summers are hot.