Trigger Rush

Trigger Rush is a companion perk in Fallout 4.

Obtaining
To gain the perk, the Sole Survivor must be at maximum affinity with Cait after completing her personal quest.

Effects
The player character's Action Points regenerate +25% faster, if the Hit Points value is below 25% of its maximum.

Bugs
This perk's bonus Action Points regeneration is set to only apply when you have 25 or less hit Points. Making it useless.