How many E6Bs are in service?

The correct answer reflects the current operational status of the E-6B Mercury, which is primarily used by the United States Navy as a strategic communications relay aircraft. There are 16 E-6B aircraft in service, which play a critical role in ensuring secure and reliable communication links between U.S. strategic forces and command authorities. This number accounts for operational readiness requirements, maintenance cycles, and the necessary fleet size to fulfill the mission of supporting nuclear deterrence and ensuring national security.

Understanding the significance of the E-6B and its capabilities, such as its ability to send messages to submerged submarines, highlights why the precise count of aircraft in operation is essential for both military strategy and logistics. This is an important aspect of maintaining the readiness and responsiveness of U.S. strategic forces.