Senators made it clear to Defense Department nominees at a nomination hearing Tuesday that they expect action to address problems with military personnel readiness.

“I look you in the eye and tell you a 100-hour work week is too long for a young member of our armed forces,” said Sen. John McCain, R-Ariz., chairman of the Senate Armed Services Committee. “They are working 100-hour weeks. It has to stop. Otherwise you’ll see more tragedies such as took place with recent collisions.”

McCain described it as a “military readiness crisis” that has affected every branch of service, with ship collisions, air crashes, vehicle accidents and personnel shortages in critical roles like aviation and cybersecurity.

“The department is struggling to make do with budgets that are too small, unpredictable and driven by politics rather than strategy,” he said.

Unfortunately, he said, personnel and readiness are hardest hit by these budget issues.

McCain said when he recently visited with the families of sailors on the destroyer John S. McCain, 10 of whom were killed in the aftermath of a collision with a merchant vessel, they told him “they believe their young people were not provided with what they needed to effectively operate in defense of this country.”

An example of that, he said, is the 100-hour work week.

“Something’s got to change,” he said. I don’t like looking at those mothers whose children’s deaths could have been prevented. This is a serious issue. It’s pretty obvious according to the chief of naval operations, that this could have been prevented. And Congress is also complicit in this almost criminal behavior.“

McCain pointed to the shortage of pilots, noting that it will be a crisis. “I want a new look at this whole issue,” he said. “If I had a priority for you, I would address that first.”

He urged the nominees ― Anthony Kurta, nominated to be principal deputy undersecretary of defense for personnel and readiness, and James E. McPherson, to be Army general counsel ― to visit pilots and ask why they joined the military.

“I know enough of them to know they joined the military to fly airplanes, not because they want more money. Money is an important factor, but the defining factor is whether they’re happy with their lifestyle and ability to fly airplanes and fly in combat.”

A related issue is the Defense Officer Personnel Management Act, or DOPMA ― a personnel system which McCain described as overly rigid, and one that requires pilots and others to assume numerous staff assignments and move every few years in order to be promoted. The senator said it’s time to modernize the policy to improve efficiency and attract more qualified recruits.

DOPMA “served the military well for many years,” Kurta said in response to a question from Sen. Thom Tillis, R-N.C. “For a large majority of the force, it works.”

But as the nature of warfare has changed, DOPMA is constraining, he said. He noted DoD needs flexibility to bring in talent needed in certain fields.

Tillis urged Kurta “to get on a fast track” to provide lawmakers a “punch list” of ideas for modernizing the system.

McCain noted that Kurta has held senior positions in personnel and readiness over the last three years, during a time when readiness has declined to “a nearly unprecedented level.” He highlighted numerous cases of senior officer misconduct, a crisis in pilot and aircraft maintenance personnel retention, and DoD’s roadblocks to the Armed Services Committee’s attempts to streamline the military health care system.

Kurta said he didn’t disagree with the premise, but took issue with the statement about military health care system reform. In the past eight months he’s been the acting under secretary of defense for personnel and readiness, DoD has sent two reports on how DoD intends to enact military health systems reform, he said.