What three tactics should you use upon hearing gunshots in the building?

The recommended tactic of Avoid, Barricade, Confront is particularly relevant in situations involving gunfire within a building. The first action to take is avoidance, which means finding a safe location away from the gunfire if possible. This reduces the risk of coming into harm's way. Next, barricading is essential for providing an additional layer of security; it can make it more difficult for an intruder to reach you and can help protect against gunfire.

The idea of confronting an assailant is generally not advisable unless absolutely necessary. However, in some extreme situations, individuals may need to make a split-second decision to intervene when there are no other options for safety.

This answer reflects a thoughtful approach to personal safety in chaotic environments. It focuses on both immediate actions to avoid danger and ways to secure oneself if escape is not possible, promoting a proactive but cautious mindset.