8.2.1: Units will Op-Fire at any enemy units leaving their region (including units using Strategic Movement through a region, but not Air units returning to their home base (section 7.1.9) after a declared combat or a patrol).
Does 'units' refer to air/artillery, or all units? I'd think the former.
I'm also interested, how can a unit using Strategic Movement leave the unit's region? I thought that SM only happens when there are no enemy units in a region. [:)] Or maybe the above rule covers air units in this case.
Any thoughts?

