Heist Prep: Vault Drills

"So, we can con a lot of things, but we can't con a vault door. We'll still need a some heav-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.

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.

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 obtaining a vault drill.