Not sure if anyone else has seen this. Maybe it says so in the gear description, but idk.
I was doing one of my patent pending "no gear, no fear" runs. Spawned near north relay and managed to find two claymores in one of the small side buildings. Hearing the UESC fighting someone on the far side of relay, I hatched an idea. Close the shutters, cover both doors with claymores, position just behind the ladder and get ready to knife rush whatever entrance comes first.
But they just moved on. Never even heard their footsteps near me. I didnt really have anything better to do so I went full sunk cost fallacy, and settled in for the long haul. I wanna say at maybe the 12 minute remaining mark, my claymores popped on their own, in the order I placed them. No gunshot, no footsteps, I thought maybe someone shot em from the skylight, but the one was positioned such that you couldn't see it from there.
Anyway, I had my little wtf moment, secured some salvage and managed to creep someone else's exfil with a last second smoke.