[interstaterunner]

If you are NOT on the first artillery screen/page when you switch to airborne or spotters then nothing will appear, unless of course you have more than one page of airborne/spotters (a rare occurance). In regards to computer air purchases you will have to set the computer air to more than xxx to consistantly see enemy aircraft. Xxx is simply a random setting and will drastically reduce the presence of enemy air, as the visibility, points, and random number of air power have to all match up. Random means 0 through 50 not 1 through 50. I was once attack during a campaign by 22 soviet aircraft! I had a solid layer of air-defense so they lost 14 of them, tsk tsk. Hope this helps