Cyberdyne have been working on a new operating system for some time (years?). It's due to be released in around 13 hours when Sarah, Kyle and Pops arrive at the Cyberdyne offices.
They head in through the main entrance, where there are seemingly just 4 or 5 security guards all in the same place. Given the size of the facility, why aren't there more spread around (at least in the entrances to the other buildings) that must surely have heard and responded to gunfire.
Also, given the scale of the worldwide reception to the new operating system, with giant billboards everywhere and everyone seemingly talking about it, why are the offices deserted with such a huge launch literally in a few hours. Inside the building I would expect technicians monitoring everything, managers making sure the technicians are ok etc. Hell, even the overnight cleaning staff ought to be around making sure it all looks good for the media.
Speaking of the media, where are all the Outside Broadcast trucks that would surely be being set up to cover such an event?
In short - where is everyone?