G. Morgan wrote:

I've serviced fire alarms in big cinemas like that. The protocol is
pretty complex. Once smoke is detected anywhere in the building *all*
of the projectors shut down, the RTU's are shut off, house lights come
on full brightness, emergency exit signs flash, elevators recall &
lock open, and a coded message - "the siren tone" with voice egress
directions are announced on all speakers. We spend a lot of effort to
make all that happen.

I want to know why the fire alarm didn't do that.

Good question. If the theater lacked any of the protections you mention,
that's one (or two or three...) more inactions that lead to almost total
liability.

Unload your Cinemark stock, double quick.