Tier A - Overview
Copenhagen attacks

Tier A - Overview

Date: February 14, 2015

Location: Copenhagen (Denmark)

Summary: Copenhagen attacks is remembered as a mass casualty incident with lasting lessons for prevention and response. The prevention lesson is to recognize escalation patterns early and act before capability meets opportunity.

Key prevention lens:
  • Escalating grievance or fixation tied to a person, place, ideology, or perceived injustice.
  • Leakage: statements of intent, threats, or ominous communications that merit documentation and follow-up.
  • Preparation behaviors: access-seeking, planning, acquisition, testing, rehearsal, or sudden "energy burst".
  • Track patterns over time and ensure fast information sharing across stakeholders.