There are a number of things about Overwatch shots that are a little mysterious to me:
According to the description for Overwatch, there's an aim penalty:
Fire on the first enemy that moves within your line of sight, with a penalty to aim.
What exactly is the penalty to aim? I've heard various people say -15% or even -30%, but I haven't seen any definitive confirmation.
In the previous XCOM game, XCOM: Enemy Unknown/Within, dashing provides a defense boost. Is this still true in XOMC 2, and if so, how much does a unit's defense increase?
If a unit was in cover before they move and trigger a reaction shot, does that unit still have the defense bonus that the cover provided, or do they lose it completely during the reaction shot?