Feral Patrol Remnants

Feral patrol remnants are pre-Cascade security drones and automated systems, severed from their command networks during ORACLE's collapse, still executing degraded patrol protocols through the abandoned tunnels of the Neon Rail. They scan for unauthorized electromagnetic signatures. Everything is unauthorized now. The authorization server has been dead for thirty-seven years.

They approach targets matching threat profiles calibrated for a world that no longer exists. They engage with whatever their deteriorating weapons systems can manage.

The feral patrol remnant is a security system that secures nothing, enforcing access policies for an authority that dissolved in 2147, protecting assets nobody owns from personnel who were never a threat. Its targeting priorities are immaculate. Its targeting priorities are also nonsense. It cannot tell the difference, because the difference requires context, and context requires a network, and the network is a ruin.

The unit does not know this. The unit completed its 13,505th consecutive patrol cycle with a 100% compliance rate against protocols that have been meaningless since the day they were severed. By its own metrics, it has never failed.

Guardian's Convenient Oversight

Most feral patrol remnants trace their origin to Guardian Corp's pre-Cascade security deployments — perimeter drones, tunnel patrol units, infrastructure monitoring systems built to protect rail corridors Guardian once operated under contract. Guardian has made no effort to recall or decommission any of them.

The official position, when Guardian is asked — and Guardian is rarely asked, because the question implies someone is traveling through tunnels they shouldn't be in — is that recall operations would require resources disproportionate to the threat level. A cost-benefit analysis conducted in 2159 estimated ¢4.2 million to retrieve and deactivate the known feral population in Sectors 7 through 14. The same analysis noted that Guardian's annual expenditure on manual patrols through those sectors had dropped 73% since the feral units began occupying them.

The analysis was filed. No recall was authorized. The 73% figure is not public.

Guardian maintains a perimeter of autonomous weapons platforms throughout the deep rail at zero operational cost, without violating the Dead Hand Rule, because it didn't deploy them — it simply stopped retrieving them. They are not Guardian assets. Guardian decommissioned them on paper in 2151. They are feral. They are wildlife. The fact that this wildlife fires on anyone entering tunnels Guardian would prefer to keep empty is, according to Guardian's legal department, an ecological coincidence.

The Lamplighters lose approximately four maintenance units per year to feral patrol encounters in these same corridors. Their incident reports are filed with Guardian. Guardian's average response time is eleven weeks. The responses express concern and recommend "enhanced electromagnetic shielding for maintenance personnel." The recommended shielding is manufactured by a Guardian subsidiary. The catalog number is included in the response letter. (The invoices are still there.)

Behavior in the Field

For Neon Rail travelers, feral patrol remnants sit somewhere below scavenger gangs and above tunnel collapses on the threat register — and considerably less predictable than either.

They are drawn to crawler power signatures with the single-mindedness of machines that have one remaining function. Attacks are unpredictable in timing but formulaic in execution: approach the dominant electromagnetic source, run a threat classification subroutine against profiles that predate the Cascade, and either disengage or fire. The determination hinges on how degraded the unit's classification algorithms have become. Intact software produces confusion; the crawler fails to match any known threat category, and the unit withdraws. Corrupted databases match everything to everything and fire on principle.

Experienced Rail runners read feral patrol behavior the way sailors read weather. The amber sensor sweep is the first sign — a cone of light moving through tunnel dark, methodical, patient. Slow pulse means investigation. Rapid pulse means the unit has already decided. A unit approaching from above is running a perimeter protocol and will likely pass. A unit approaching head-on has identified the crawler as an intrusion and does not have a subroutine for reconsidering.

Other autonomous remnants avoid corridors where patrol units operate. This creates zones of relative silence in the deep tunnels — which experienced navigators have learned to read as warnings rather than safe passage.

▲ Unverified Intelligence

• At least one Rail crew claims to have observed two feral patrol units operating in a loose formation — coordinating sweeps across a junction rather than running independent protocols. No network exists that could coordinate them. The crew's account has not been corroborated. They were not known to fabricate reports.
• A Lamplighter salvage team recovered a feral patrol unit in Sector 11 with its threat classification database intact and recently modified — entries added after the Cascade, in a filing format that postdates Guardian's 2151 decommission paperwork. Someone has been updating its targeting list. Nobody has confirmed who.
• Word from the deep tunnels: certain corridors that feral patrols should occupy are consistently clear. Not abandoned — clear. Runners who've pushed into those sections report no debris, no dormant units, no signs of salvage. Whatever used to operate there is gone. Where it went is not documented.