Yes it has been renovated a few times to keep to a more modern standard and matrix support, buts its main components, foundations, etc are decades and decades old.
Not to worry Ren, its getting verrryyy detailed.
Yes Ren and Punch, you can know IC that the Halloweeners will chase anything they think might score them some cash (or burn well) into downtown from the docks. Their Stupidity and Bravery matched only by their firepower. As one of Seattles more dangerous gangs, and well known, Aztech may be hoping to deter them with a slightly overestimated security team. If it does deter them, they dont expect trouble in the middle of downtown, so they don't feel the security is needed once at the museum.