[Rules] Friendly fire mods

[Hugmenot]

Would the +1 shift for the mortarman/artillerist skill apply to friendly fire incident? (Presumably the leader involved is not directing that fire.)
No. 9.52 states the +1 shift applies if the firing unit(s) have a LOS to the target hex. It represents the mortar or artillery''s ability to hit its intended target.

Would the -1 for firers having the target in LOS be applicable? (As in we are hitting our guy, better stop.)
My initial take is no but the second paragraph 9.52 is not entirely clear. There is a -1 shift on the Bombardment Chart that applies to all friendly fire.