The Seals
Women, particularly women who "deny" sex, are often painted as the enemy. Hated as a person, but desired and consumed as an object. One of the primary traits shared by mass shooters is their history of domestic violence and sexual assault. The more feminine touches come in the form of references to the kings of hell as laid out in the Ars Goetia portion of the Lemegeton.  The Ghost both hates and obsesses over the other and so they become one of the visual focal points. This decision to equate the concept of the other with devilry came from scapegoating being vital to the show's thematics but also problematic to display. While the display becomes opaque in meaning, no one can decontextualize it.
One inspiration for this decision is that a surprising number of conspiracy theories have backings in literal hellfire and demonology. I do not have a concrete answer for why this is the case. Likely, an acceleration occurs, viewing one’s opposition as simply wrong people morphs with time to them being minions of the devil. Additionally, the more reality conflicts with hardline scripture interpretation, the more irrational the explanations must become. Religion also makes up the backbone of some of the fringe ideologies of my family members. Religion and faith are not inherently bad, but they may help build the structure of belief without proof in some people.
The Casings

Within the bunker .223 Remington cartridge shells suspend throughout the air. It is unclear whether this is a craft or a freeze-frame of a shot firing. Someone familiar with firearms would most likely view it as the former as the casing is not the projectile. I believe that either interpretation is applicable. When we think of ammo, the visualization usually steers more towards the packaging versus what causes the harm.  Since the bunker is not a literal space, The Ghost may view weaponry in a slightly fantastical manner.
I am interested in the distinction between the round and the firearm. A round is deadly but also inert until brought into motion by force. A casing is even more inert but acts as a record of past violence. What caused it to become empty? What put it into motion?
A brass casing can always be cleaned, repacked, and put into action again. A casing is, in some respects, similar to a person. Something can propel a person into violent action and, even when inert, that possibility lays beneath the surface. So, who or what is the gun?