The HEPA 20 cartridge filter is a quest item in Fallout: New Vegas.
This problem can be resolved on PC by opening the console and entering Template:Console and then Template:Console. Stage 3 Bag Filters: A six-pocket bag filter helps capture overspray to increase. If this happens, the NPC will be set to essential to allow attaching the shock collar to them, as per Under the Collar, therefore making this quest unable to be completed since they cannot be killed. If this quest is active at the same time as Under the Collar, it is possible that the two quests will target the same NPC. if the second stage of a particular quest is difficult, you should be able to use the command to directly jump to the third/final section of the.
