As per TW pg 142, an enemy unit(UNIT A) may be subject to friendly fire if it is along the LOS of an appropriate missile attack by UNIT B.
Does "within LOS of such attacks," refer to only the hexes on a direct line between UNIT B and it's target or is there any spread?
For example, if Unit A is firing Artemis IV LRMs at UNIT C, 16 hexes away, and UNIT A is 15 hexes away, and 3 hexes off to one side. That's only an 11 degree offset.
B C
A
Also, what happens if the Nemesis tagged unit is behind the firing unit?
B C A