Believe it or not, I've had some issues similar to penguin in the AH MA's on occasion. Little dots flyin' around, and occasionally even being shot down when I'm dang sure no enemies were near me.
I've done a bit of research into this phenomenon, and now know how to "call" UFO's. I can make them appear pretty much at will.
I'll fill you in on how I do it, but BEWARE!!! It can be hazardous to your AH mental health!!
All you need to do is tap CTRL I a few times.
UFO's (some will be "invisible") will begin to show up in your vicinity if you leave your icon setting in "Friendly Icons Only".