Home » Aviation » Navy Taking Hard Look at Sustainment Costs, As New Projection Doubles Expected Long-Term Bill Navy Taking Hard Look at Sustainment Costs, As New Projection Doubles Expected Long-Term Bill January 28, 2021 12:48 PM Hull Technician 2nd Class Ronald Bell, from Bronx, N.Y., left, and Hull Technician 3rd Class Shaughnessy O’Day, from Columbus, Ind., weld a light fixture aboard the Arleigh Burke-class guided-missile destroyer USS Lassen (DDG-82) during a sustainment exercise in 2019. US Navy Photo The Navy has long struggled to understand its sustainment costs and how they affect budget plans in the near- and long-term, but an intensive effort is underway to get a better grasp on where those costs are in the budget, who is responsible for paying them and how they affect future plans to grow the fleet.