Search Big Bend Tunnel

 is a quest in Fallout 76.

Synopsis
The Vault 76 dwellers might have braved the Belching Betty and joined the Fire Breathers, but the master terminal at the Charleston Fire Department isn't ready to divulge its secrets just yet. They need access codes to unlock the real prize of the Breathers' treasure trove...

Walkthrough

 * This quest gives players the opportunity to unlock the anti-scorched receiver recipes at the Fire Breathers' master terminal. To get them all, players need to gather three access codes: Allemane's Code, Cominsky's Code, and Holstein's Code.
 * The codes are found on the bodies of the Fire Breather sergeants. They are located at the entryways to the tunnel on both ends (just outside the tunnel), for Allemane and Holstein, while Cominsky's code is on his body deep inside the tunnels, at the dead end of the excavated tunnel branching off from the maintenance hall.
 * After gathering the codes, players simply have to return to the Fire Department and input them to the Fire Breathers master terminal to gain the recipes.