What does the requirement for “dual phenomenology” refer to in missile warning operations?

• A. Two missile warning officers must agree that a launch has occurred for the warning event to be considered valid.
• B. A missile heading for the United States must be detected at launch by a satellite and tracked by a radar for the warning event to be considered valid.
• C. Missile warning sensors operated by at least two different military services must detect a missile launch for the warning event to be considered valid.
• D. The missile launch must be detected by two satellites with different look angles for the warning event to be considered valid.

Answer: (B)

Dual phenomenology means confirming a missile event using two different sensing modalities. In missile warning operations, a satellite typically detects the launch due to the heat signature, while a ground-based radar tracks the missile as it flies. This cross-domain corroboration ensures the warning is real and reduces false alarms because two independent sensor types observing the event makes it much less likely to be a spurious signal. So, the best fit is the scenario where the satellite detects the launch and the radar tracks the missile, providing validation from two distinct sensing modalities.