Well it's not (going to reach the objective) unless you can fall into B2B with the target trooper; otherwise you can't get all the way. It's not 'danger' (which is about risk) it's a fact. But I'm arguing logic and semantics not RAI; that's nice and clear now. Cheers :)
Certain death for a Kuang Shi is more than 4" (typically 2 stairs up), for a Shaolin or Daturazi and other 4-4 troopers with ARM1+ that increases to more than 8" (4 or 5 stairs up). Neither of which you're allowed to measure prior to deciding whether to prevent the order or not :)
In the situation being discussed, the closest enemy trooper is at the base of the building, so the Jump will already take the Impetuous trooper about 3" straight down. So you're looking at more than roughly 7" elevation for ARM0 and more than roughly 13" for ARM1 to auto-kill them.
