HP Count
Sharing the target's remaining HP so the whole team knows the kill is one shot away — synchronizing the finishing burst.
Even when focus is landing, if "how many more shots" is not passed to everyone, damage scatters right before the target drops, a heal gets in, and the kill is lost. Calling remaining HP or lethal synchronizes "every round into this, now", preventing wasted damage and lost kills at the same time. Conversely, sharing the instant the target dies lets surplus damage flow to the next target as fast as possible. Where target calling specifies who to kill, HP counting shares how much damage is already in — a call at a different granularity, tied directly to seeing the focus through.
Call the remaining HP or "lethal" the moment the focused target drops to red, so everyone's finishing burst lands together. Before committing a wombo combo, call something like "50 left", confirm the kill, then pop it.
No HP call, so everyone keeps dumping rounds at random, a heal lands for an instant and the kill slips. Or damage keeps going into a target that is already dead, putting the switch to the next target a second behind.
Crossfire
Two or more shooters hitting the same target from divergent angles so no single piece of cover blocks both.
Wombo Combo
Stacking multiple ultimates within one second to bypass defensive cooldowns and wipe the team.
Target Call
A call that designates which single enemy to focus, aligning the whole team's damage.
Target Switch
Shifting the entire team's focus to a new target when the original call gets saved.