In an early indication that Congress is receptive to the significant proposed reforms to the military’s benefits and retirement system, the only challenge raised by the senators reviewing the proposals Tuesday was whether enough military retirees had been surveyed.

The 15 reforms were recommended by the Military Compensation and Retirement Modernization Commission last week. The most significant reforms cover a new 401(k) savings plan members would be automatically enrolled in and a massive overhaul of the way military members and their families get medical care, which the commission estimates would save $31 billion by fiscal 2020.