The USS Kauffman is now the last of its breed. The 453-foot Navy ship is on a six-month deployment that marks the final mission for any Navy frigate. All the rest have been decommissioned. Kauffmann will follow suit when it returns from Central America in September. Rear Adm. Peter Fanta, the Navy’s director of Surface Warfare, joined Tom Temin on the Federal Drive to explain the rationale behind the decommissioning, the policy behind it and how the Navy intends to replace the frigates.