So, I was argon farming in a T2 Exterminate, minding my own business, when I heard that humming sound effect that the special containers in the Sabotage missions emit (Yes, I am positive that I was not running a Sabotage). I follow the sound into a nearby loot room, and see a shiny, gold-plated (think prime) Void container, labeled as "Grineer Void Container" (It might have been something else, but I could swear that's what it said). I hit it with my melee, and it gave me a built Forma, ~45k credits, an AkStiletto blueprint, and a 60-minute affinity booster. I looked around on the wiki for any mention of this, but couldn't find anything. Has anyone else found anything like this?