Swarm / Multi-UAS

Coordinated operation of multiple UAS — from simultaneous multi-aircraft flights to autonomous, distributed swarming behavior — identified in the Department of Defense’s publicly released 2021 Counter-Small Unmanned Aircraft Systems Strategy as a growing category of concern distinct from single-aircraft incursions, because it can saturate detection and response capacity built for one aircraft at a time.

Key facts

Field	Value
Threat type	Coordinated / distributed, multiple aircraft
Typical UAS group involved	Group 1–2 (low-cost, mass-employable)
DoD framing	Named line of effort in the 2021 public Counter-sUAS Strategy
Key challenge cited publicly	Saturates single-aircraft-oriented detection/response capacity

Why it matters operationally

Public doctrine treats swarm/multi-UAS as a tactic that can be executed with ordinary Group 1–2 hardware — the threat is the coordination pattern, not a distinct airframe class, which is why it is catalogued here as an RF/behavioral threat class rather than a weight-based group.

Public examples

• Coordinated multi-aircraft small-UAS activity described generically in the DoD’s public Counter-sUAS Strategy and in CISA’s public Suspicious UAS Activity Guidance for critical-infrastructure operators

Sources

• Department of Defense Counter-Small Unmanned Aircraft Systems Strategy (2021) — U.S. Department of Defense
• Suspicious Unmanned Aircraft System Activity Guidance — Cybersecurity and Infrastructure Security Agency (CISA)
• Counter-UAS Legal Authorities Fact Sheet — Cybersecurity and Infrastructure Security Agency (CISA)