It seems that the upcoming Joker (2019) film was filmed in the same studios as Gotham, Steiner Studios, within the former Brooklyn Navy Yard Complex.
Though it appeared as if Ecco wasn't insane yet in "Year Zero," Francesca Root-Dodson has stated that she believes Ecco shot herself and became insane prior the events of the fifth season.
Bruce said that Lucius would raid Wayne R&D (Research and Development) Lab for Night Vision Googles, which would be repurposed for GCPD personnel. Night Vision Goggles (NVG) work on the principle of amplifying ambient light. It was a piece of technology that was spun-off from military usage to the civilian consumer market.
The production code was T40.10051.