[Rules] Airborne Remastered Scenario 4 Special Rules

[daedalus]

In Airborne remastered, scenario 4, The Lock, the US Airborne get an off-board artillery increment of 16 but it states that US para leaders may not spot for this artillery.

I may not be reading the bombardment rules correctly but, I am not seeing how this artillery can be employed without the US leaders spotting for it. Para 9.1 states that units using Bombardment fire do not have to spot for themselves. A friendly, undemoralized regular leader can set the tart for them unless the scenario instruction say otherwise.

So, how does this work as the scenario instructions state that the Para leaders may not spot for the off-board artillery? How do off-board artillery units spot for themselves?