All team movement is based upon which concept?

The concept of 540-degree cover is recognized as a crucial principle in team movement during active shooter situations. This concept emphasizes the need for a team to maintain comprehensive situational awareness and protection while maneuvering.

In practice, achieving 540-degree cover means that team members are aware of and can respond to threats from virtually all directions, while also positioning themselves in a way that maximizes protection from potential gunfire. This ensures that the team is effectively shielding themselves and ensures safe movement without exposing any member to unnecessary risk.

In active shooter scenarios, where threats can come from various angles, this level of awareness and protection is vital to ensure the team's safety and effectiveness in responding to the incident. It allows for coordinated movements that minimize vulnerability, providing a strategic advantage in a highly unpredictable and dangerous situation.

Other concepts mentioned, such as 360-degree awareness or 180-degree visibility, do not fully encompass the complexity of team dynamics and environmental threats during such incidents, making them less suitable as the foundational principle for team movement.