Lawmakers who once asked the Navy to create a carrier-based drone that can do anything have come around to the idea of an aircraft that would be used only for one mission — for now.

The Pentagon introduced the Carrier Based Aerial Refueling System, or CBARS, with its fiscal 2017 budget request, asking for $89 million for the program to develop an unmanned aerial refueler that can take off and land on a carrier flight deck.