If you're doing a Pick Every Unit In Group operation it will be included unless you include a specific condition where the Matching Unit isn't alive. If the fact that it's dead means that it is no longer relevant, some computer time, as miniscule as it might seem, will be wasted dealing with it. If you know what group or groups a given unit is in or might be in, you should probably remove the unit from the group or groups upon death. One thing I often do is if a PEUiG op is used on a particular group multiple times is include an If/Then/Else within the Pick Every Unit In Group loop that checks if the Picked Unit is still alive and still within the map rect. If both are true, the unit is processed. If not, I remove the Picked Unit from the group. By the way, dude, this thread probably belongs in the World Editor Help Zone.