F136 Engine Will Harm JSF Program

So says JSF program office chief General David Heinz, who notes that it will drain resources away from low rate production, but just a few days later, he says that he favors a second source engine and radar:

"I believe that part of the debate that has to occur -- and is occurring - is, is there an operational risk that we are accepting by having just a single engine manufacturer?" Heinz asked. "I simply think that we focus too much of the discussion about the cost and not the operational risk."

The 1^st story is from June 1, the 3^rd, so what changed in 24 hours?

My guess is that he someone talked to him about industrial base issues, or perhaps someone talked to him about not telling Congress what to do.

Any insights would be appreciated.