Because that needed to happen. REQUIRES SAN MARTIN DLC!!! https://store.steampowered.com/app/1252200/PAYDAY_2_San_Martn_Bank_Heist/
Put it into your mod_overrides folder! Mod itself does not Require SuperBLT / BeardLib in order to work.
Example: C:\Program Files (x86)\Steam\steamapps\common\PAYDAY 2\assets\mod_overrides