6-7 years ago our code enforcement guys found the water turned off on the sprinkler system on a quite large 5-story stickbuilt apartment. Not anywhere near as big as the hi-rise here, but plenty of potential for disaster.
They are usually rising stem valves that are easy to tell if they are open and they should have locks on them to ensure they stay open.
Don’t trust your life to another’s abilities entirely. Just makes sense.