Researcher Field Note 2104 is a NERO recording in which O'Brian argues that Hordes are far from mindless. It is a story collectible that unlocks on its own.
O'Brian says chemical traces at nests point to pheromones carried on the air. NERO thinks Hordes may be forming something like a hive mind.
Field notes 2104 to 2106 all belong to O'Brian's thread of the story.
Black Box Recording - 1001
Black Box Recording 1001 is a NERO Intel log at a NERO research site in Cascade. It records a NERO freight train of casualties crashing.
Field Recording - 1260
Field Recording 1260 is a NERO Intel log inside the Horse Lake NERO Checkpoint in Cascade. A freight train full of casualties crashes into NERO Depot Site 27.
Field Recording - 1577
Field Recording 1577 is a redacted NERO Intel log at a NERO research site in Belknap. It captures a NERO team trapped and killed inside a cave.
Field Recording - 2011
Field Recording 2011 is a NERO Intel log at a research site inside a cave on Highway 97. A tired corporal complains about his duty roster.