|For a cross-game overview of this perk, see Nerves of Steel.|
It increases AP by 1 point every 10 seconds.
This perk may be less useful to those who have chosen the Grim Reaper's Sprint perk, as it fully restores Action Points upon killing an enemy in V.A.T.S. However, since some new enemies (such as super mutant overlords) in Broken Steel require multiple V.A.T.S. rounds to kill, playing on harder difficulty levels, and having few Action Points may make someone consider taking the script-edited version of Nerves of Steel.
The perk appears non-functional on both the PC and Xbox 360 with the version 1.5 patch issued for Broken Steel, but this is inaccurate. While the perk does function, the increase in action point regeneration rate is extremely low (amounting to 1 additional AP per 10 seconds).[verified]