What happens to an "allied" initiative slot when someone (either a PC or NPC) dies? For example, let's say I have a small battle between two PCs and three (ungrouped) NPCs. Everyone rolls a simple vigilance check which results in the following order:
PC Slot
NPC Slot
PC Slot
NPC Slot
NPC Slot
On the first turn of combat, Bob fires his disrupter rifle and kills a stormtrooper. What happens to the initiative order? Which NPC slot is removed from the order? The complexity of this can compound (or be simplified, depending on how you look at it) when certain NPCs have acted and others have not, forcing a sort of "process of elimination" to rationalize which slot is taken out.
I couldn't find anything in the rules about this. How is everyone else handling this, and does this need to be added into the rules somewhere?