[Mobhack]

Low vis (less than 20) if air strikes are set to XXX will result in a lower chance of assigning air for the side assigned XXX, as it is night or poor visibility.

XXX uses the nation's air number compared to the other nations air number plus weather to determine assigned strikes. So if you play an enemy with a low strike number (e.g. Syria) against a nation with a high number (e.g. Israel), you will rarely see air strikes offered, and if so, maybe 1 or 2.

(Unlike the original SSI code, where if you were granted air strikes then the other side was guaranteed to have none (So you could skip flack buy if so) - both sides can have air in our games.)