QuoteWhen determining which defending minis can suffer wounds, line of sight is determined from the attacking unit, and not the unit using the fire support keyword.
QuoteA weapon is considered eligible if it is a ranged weapon, if the defending unit is at the weapon’s range, and if any other requirements of using the weapon are met.
Based on the two quotes pulled from the latest RRG, if I'm attacking with a unit of Shoretroopers and opt to use Fire Support from a friendly Mortar Team, does the Mortar team need to have LOS on the defending unit? I know that they have to have range.