A major problem with working in KSA is getting to and from the Airbase and in fact anything that involves public exposure....
I spent a couple of years in Dhahran in the early 90's and it was fine. I went to Jeddah back in 2001 and it had changed dramatically. I was watching TV in my villa when the US Embassy got attacked !
Your a sitting target when driving on the roads in Saudi. Once your at work no problem and most compounds now have armed gaurds. But getting between the two is when your vulnerable. I always felt very uneasy sitting at lights and would drive extremely defensively always leaving gaps and being very aware of the vehicles around me. Saudis have ready access to small arms !
So think carefully.