UPGRADES: USS Zumwalt Arrives in Mississippi for Hypersonic Weapon Installation.

“USS Zumwalt (DDG-1000) arrived in Pascagoula, Miss., today to enter a modernization period and receive technology upgrades including the integration of the Conventional Prompt Strike weapon system,” reads a statement from the Navy provided to USNI News.

“The upgrades will ensure Zumwalt remains one of the most technologically advanced and lethal ships in the U.S. Navy.”

The ship arrived Saturday afternoon after leaving San Diego earlier this month.

“To the crew and families of the guided-missile destroyer USS Zumwalt (DDG-1000), we would like to extend the warmest welcome to the newest members of our shipyard community. It is an honor for us to serve you and the Navy by doing this important work,” Ingalls president Kari Wilkinson said in a statement.

The 16,000-ton warship pulled into Ingalls Shipbuilding for the availability that will pop off the existing twin 155 mm Advanced Gun Systems and replace them with four 87-inch missile tubes.

The tubes will each hold three Common Hypersonic Glide Bodies (C-HGB) – hypersonic missiles being developed jointly between the U.S. Army and the Navy – for a total of 12 missiles on the ship.

It’s a good thing, too, since there’s no ammo for the ship’s fancy five-inch guns.