Public sector organizations face a critical juncture in cybersecurity as adversaries leverage AI to execute attacks at unprecedented speeds, with AI-generated phishing campaigns achieving significantly higher success rates than conventional methods, while existing security infrastructure was not designed for this velocity. Only AI-driven defenses can effectively counter AI-powered threats, and numerous public sector entities are adopting agentic security operations centers to address resource constraints, staffing shortages, and budgetary pressures. The article outlines how AI-powered SOCs reduce fragmentation and accelerate threat detection and response for government agencies.