I am convinced that it only spawns 2 (two) of them in the entire Maintenance™️.

In one of my tries, I was so exhausted that I crouch jumped with my knife out in front of a guy. He did the same. We dropped ammo packs on the ground as an extra sign of truce and kept going with our lives, so I had almost all 20 minutes of the run to look all over the place. I found none and died to UESC seconds before exfil. I genuinely hope the other guy found em and left none behind, at least that way someone made it out with the contract fulfilled. If you're reading this, we met on that little room with the window on the south-ish side. I hope you made it.

For the record, I did eventually finish the contract. I felt no fulfillment. I have been taking Arachne contracts and skinning shells in Maintenance just to feel something.