Brian Williams will be off the air this week after he admitted that he had “misremembered” a 2003 incident in Iraq.

Williams has confirmed that a helicopter he was on did not come under RPG fire, despite several claims to the contrary. Now, there are new concerns about stories Williams told after Hurricane Katrina.

Williams has reported that he saw a body floating in the French Quarter, and that he got dysentery by drinking flood water.

Former New Orleans Health Director Dr. Brobson Lutz, who treated patients during Katrina, was on “Hannity” tonight to discuss those claims.

Lutz said he “can’t recall treating a single person for anything even resembling dysentery.” He also explained that the French Quarter got very little flooding, and nobody else saw a body floating in that location.

Allan Kelly, the pilot who flew Williams’ helicopter, was also on “Hannity” to reiterate that the chopper they were on did not take any fire.

Still, he said, “I don’t make any judgments on Mr. Williams in this regard.”

Some are also questioning Williams’ differing accounts on how close he came to rocket fire while in a helicopter in Israel back in 2006.

Brent Bozell, of the Media Research Center, sounded off tonight, telling Sean Hannity that the news is getting worse and worse for Williams.

“He has no credibility left, and neither will NBC if they bring him back,” he said.

Watch the full segment above.