[Mobhack]

1) air will happily perform blue-on-blue, especially if the blue forces are near the target hex, or the air route in overflies blue forces.

Keep air strikes a couple of kilometres (40 hexes) or more from your troops (especially vehicles). CAS against enemy vehicle targets can be called in closer to friends provided you only have grunts in close - air prefers vehicle targets, and the Air Farce is not very good at target recognition. Try to plot the ingress route so it does not overfly own forces as well.

2) Cancel will stop fire dead. However, any units with no radio comms will do whatever they were last tasked to do. So those times you got hit with friendly fires - were likely to be units already plotted that had lost comms?.

In any case, if you are calling in arty that close, you will get hit. "Danger Close" fires are a lottery, so are only done when the situation requires it in real life.

Disabling weapons is only relevant for direct fire weapons, not area missions, as far as I recall.

Cheers
Andy