Which of the following classes does NOT have the Mk 15 Phalanx CWIS?

The Freedom class Littoral Combat Ship (LCS) does not feature the Mk 15 Phalanx Close-In Weapon System (CIWS) as its primary self-defense system. Instead, these ships generally employ different weapon systems optimized for their specific operational roles, such as the 57mm gun and various missile systems depending on the mission package.

In contrast, the Nimitz class aircraft carriers, Ticonderoga class cruisers, and Littoral Combat Ships generally use the Mk 15 Phalanx CIWS to provide defense against close-in threats, particularly from anti-ship missiles and aircraft. Each of these vessel classes is designed with a focus on versatility and adaptability, but the Freedom class diverges from the trend of integrating the Phalanx CIWS into its armament.