Into the Fire

Into the Fire is a main quest in Fallout 76.

Quick walkthrough

 * Finish the mental quiz.
 * Head to the physical test and complete it.
 * Head to the final exam and complete it.

Detailed walkthrough
This quest can be started by approaching the Charleston Fire Department and listening to the Protectron's advertisements about joining the Fire Breathers division of the Responders. The player character is prompted to utilize one of the terminals and take a Knowledge Exam on fire safety, the answers to which can be found on information pamphlets scattered around the Charleston Fire Department. Alternatively, the process can be expedited by acquiring the knowledge exam cheat sheet, found next to the master terminal on the second floor. The answers to all 7 of the questions are as follows: The next step is to take a Physical Exam at a testing site at the Charleston Herald building. This starts the quest Runner's High, in which the player character must complete an obstacle course and clear two checkpoints within three minutes. Once this is passed, the final exam is held at the Belching Betty mineshaft in the Ash Heap.
 * 1) Evacuate as quickly as possible.
 * 2) A water-soaked rag.
 * 3) Gently bind the burn with clean bandages.
 * 4) Retreat immediately.
 * 5) 1 pt. purified water, 2 ash roses, 2 blight, 2 soot flowers.
 * 6) Fall back and engage from a distance with firearms.
 * 7) End his life as mercifully as possible.

There, a Protectron named Bernie hands out the Fire Breather uniform and Fire Breather helmet and an anti-Scorched training pistol, as well as the Fire Breathers final exam briefing holotape.

Exploring Belching Betty reveals the story of the Scorchslayers, a squad of Fire Breathers initiates, who died fighting the Scorched at the location. The primary objective of the final exam is to activate an emergency beacon in the northeastern end of the mineshaft. Upon the beacon's activation, a new wave of Scorched does attack, while Bernie asks the Vault Dweller via radio to return to him for a final debrief. He then gives the Welcome to the Fire Breathers holotape and asks for the player to return to the Charleston Fire Department for company registration.

Registration can be completed on the Fire Breathers' master terminal on the second floor of the Charleston Fire Department. While putting their name into the system, the player character is alerted of an incoming priority call. Listening to it concludes this quest and starts The Missing Link.