[quote="Eyeguy":ml4pk0jj]So now there's the problem of me having possibly hundreds of Walls that I have to check LOS on. I was kind of expecting the "Has LOS to" condition would've picked the object in LOS.. [/quote:ml4pk0jj]
Yeah, it appears that the sight-ee isn't put in the Selected Object List, only the sight-er. You need another condition to pick the sight-ee.
And if you do plan on using LOS for this, then I suggest cutting down on the number of objects to check LOS on. If you keep the Range setting on the LOS small then you should be okay.