I don't know where exactly to post this so I picked this sub-forum (board section).   Monolith issued a Line of Sight tool (interactive web-page) that is a pretty good help for INSTANTLY checking if there's line of sight (LOS from now onwards) from or to an area. https://the-overlord.net/index.php?/batman/line-of-sight/line-of-sight-subway/ BUT, I have detected some "issues" (for now only on the Subway map).   Please see screenshot below with the red lines I included,