Best for you, if you know the road going to the US base at the back of industrial area, better used that road, far more easier than coming from Salwa road, So from the Medical commission road straight up to the end of that road, around 5 R/A then turn right,you'll know your in the right road if you see the US base compound in your left,straight for another 2 R/A, then you see a nice compound in your right with a lot of new vehicles, look for the entrance.