Perk Book in Fallout 4.
- Energy weapons inflict +5% critical damage.
Where to Find/Location
- ArcJet Systems: In the CEO's office on the second floor
- Mahkra Fishpacking: On a small table in the northeast corner of the filleting room on the lowest floor.
- Reeb Marina: On the wooden bench in the kitchen of the warehouse
- Rocky cave: On a broken fridge In Virgil's Laboratory on the left of Virgil's terminal.
- Poseidon Energy: On the metal desk in the central metal catwalk hut.
- HalluciGen, Inc.: On the first floor of the northeast corner of Weaponization Research lab.
- Mass Fusion building: On the computer bank in the upper offices above the glass floor
- General Atomics factory: On a metal desk against the east wall in the upper floor office.
- University Point: On a small table in the northeast corner of the top floor computer room.