Heist Prep: Vault Drills

Vault Drills is a mandatory prep mission featured in Grand Theft Auto Online as part of the The Diamond Casino Heist update. It is a freeroam mission needed to progress The Diamond Casino Heist. Completing this setup gives players drills to use on the vault during The Big Con, as well as allows players who purchased the Practice Vault Door for their Heist Prep Room to practice drilling the vault. The mission has two possible variants.

Safehouse
"So, we can con a lot of things, but we can't con a vault door. We'll still need a some heavy-duty equipment to get through all that metal... and luckily enough, I just heard about a young enterprising young criminal outfit who have what we need. I heard about them on the police scanner, so you'll be dealing with some cops, but... no matter. It's a godsend."

- Lester's briefing.

Overview
Lester informs the player that there is an arrest happening at the safehouse of a criminal group planning a job, and that they can steal the drills from there. This safehouse can appear in places such as Terminal or Sandcastle Way in Del Perro.

Once there, the player can either run in and grab a duffel bag or shoot the police officers and criminals, but will receive a three-star wanted level either way. Members of the criminal group will also chase down the player, with Fugitives on the ground and Buzzards in the sky. The player must then evade the police and deliver both duffel bags to their Arcade.

Lester's Dialogue
"That's the drill alright. Not so easy to come by one of those, so... bring it back to the arcade and I'll look after it."

- After collecting a vault drill.

Fleeca Bank
"Okay, I know you chose the big con, but even you can't charm your way through a vault door. We're in luck though... there's a professional crew robbing a bank using the exact heavy-duty hand drills we need...like, right now... as we speak. And the cops have been notified, so... get over there and get those drills as quickly as you can."

- Lester's briefing.

Overview
Lester informs the player that there is a bank robbery happening at a Fleeca Bank location, such as Hawick Avenue in Alta or on the Great Ocean Highway in Banham Canyon.

After arriving and entering the bank, the player will receive a three-star wanted level and both the police officers and the bank crew will attack the player as they collect the drills from inside. Once the drills are collected, the player will have to both avoid the bank crew, who are chasing them in Fugitives and Buzzards, and their wanted level before delivering the drills to their Arcade.

Lester's Dialogue
"You got it. Small but powerful enough to wreck the innards of a highly durable vault-locking mechanism. Make your way back to Planning immediately."

- After collecting a vault drill.