@Ren: Well if you are asking... There are two guards down at the lobby and another two patroling around the building. They are accompanied with Dobermans, and I have seen a few other drones, like Rotordrones. Equipped with non-lethal weapons. Penthouses in tenth floor have their own security, as far as I know. The rest of the building if connected to ARC in the lobby and also PANICBUTTON ofcourse. KE have response time up to 2 minutes. I don`t know nothing more about the system architecture than that there are maglocks all around the building, biometric scanner at the elevators and main entrance, cameras at main corridors and stairways and remote controled lock on every floor and appartement entrance doors. And, that intercomm system I`ve mentioned. I didnt pid more attention to this, since I have all privileges I need to enter and get to Jacquelins appartement. Also...in state of emergency my SIN usually allows me some freedom of movement in most objects like this, in case that medical assistance is needed.
@Sylvia: Balcons and outer perimeter would probably be protected by combination of visual and movement sensors. Probably average level, as this is far from hi-profile targets you have been trained for. Also, there is more than this entrance. One service exit/entry point is in the lobby, back of the building, leading to service room.
Detailed maps you have show that there are air vents, that are used to pump the fresh air in and fumes out of the underground garrages. Those shafts are shared for Apartement house`s and Junction`s underground areas, and leads to the set of hatches and gratings built in the roadway between the two. You recall thermohraphic imagery from Mask who was cruising the street, showing warm air blowing throught them like infrared geysirs.