Happening now, turmoil at the CDC.

A new acting director in a raucous end office,

top officials resign after their director refused to step down,

prompting the White House to fire her.

New details emerging on what investigators have found out

about the Minneapolis shooter as we learn more

about the young victims.

And Cracker Barrel's 93-year-old co-founder is talking about that attempted rebrand using

words like bland and pitiful, plus new reporting on other changes the company is quietly making.

And Katrina, 20 years later, the dire warnings today that history could repeat itself.

Bless, we'll bring you never-before-seen photos of the devastation. You won't want to miss that.

Welcome to our viewers in the United States and around the world. I'm Pamela Brown.

We'll blitzer is off and you're in the Situation Room.

Thank you. Pamela Brown, Wolf Blitzer is off and you're in the Situation Room. And breaking overnight upheaval at the Nation's Command Center for Public Health,

CNN has learned that Secretary Robert F. Kennedy Jr.'s deputy at the

Health and Human Services Department, Jim O'Neill, is set to become interim director of the

Centers for Disease Control and Prevention. Today, a leadership crisis hangs over the CDC. Three

top leaders have quit to protest the firing of the former director. She reportedly clashed with Kennedy over vaccine policy.

Hundreds of CDC employees and supporters honored the resigning leaders with a clapout rally.

The departing officials say Kennedy, a vaccine skeptic, undermine the agency's foundation and science.

What makes CDC great?

Are the people that make CDC up, the scientists, everyone that makes this a family, and it's a family that defends our country and the health of our children

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