USNS Millinocket (JHSV-3/T-EPF-3) (ex-Fortitude) is the third Spearhead-class expeditionary fast transport, which is operated by the United States Navy's Military Sealift Command and was built in Mobile, Alabama.

[3] It has a flight deck for helicopter operations and a loading ramp that allows vehicles to quickly drive on and off the ship.

Since the ship will be operated by the Military Sealift Command and not the United States Navy itself, it will carry the USNS designation and not USS.

[5] The ship is the second U.S. Navy vessel to be named Millinocket (after the town in Maine), the first being a freighter sunk by a U-boat in 1942.

In 2016 Millinocket will transport items to test with Fort Worth the LCS expeditionary maintenance capability.