While this would normally appears to be an operations and maintenance requirement, in certain cases RDT&E funds can be used for items not strictly used to perform actual research. The DoD FMR (Vol. 2A, Ch. 1, Sec. 010213) indicates that RDT&E funds may be used for some requirements typically funded with O&M or Procurement funds. RDT&E funding can be used for the operation of R&D installations and activities engaged in the conduct of R&D programs, including direct and indirect efforts, expense, and investment costs. In other words, there is some leeway. I recommend you review the relevant coverage in the DoD FMR as well as this ACQuipedia article on RDT&E funds to help arrive at an appropriate decision.