G'day all! With recent fixes to door glitching in Contested Zones, I'm endeavouring to harvest some red security cards at the Pyam stations. I've been parking my Connie, with Nursa rover onboard, at a secure spot and propelling my way into the station via Extinguisher. Problem is, I only have two or three extinguishers, and have to abandon them at the entrance as the exits are on another side. I want to do multiple to & from my ship while at Pyam.

What's the easiest, fastest way to stock up on like a dozen or more of the handy little f***ers? Are they sold anywhere in particulars?

Thanks!