In order to meet its goal of building 355 ships, the Navy would have to spend an extra $200B more than its current budget over the next 30 years. The discrepancy came from the Navy failing to estimate faster growth in the costs of labor and materials in the coming future. Vice Adm. William Merz, the deputy chief of naval operations, admitted that the Navy is struggling to plan for its own growth and that finding an accurate model is a difficult process. However, the estimated $856 billion comes with an asterisk as the Navy may not buy all of the ships it has outlined in its 2019 plan. The Navy and Marine Corps will cooperate in a project to create a new Force Structure Assessment.