Jeb Bush on Friday night defended brother and former President George W. Bush after fellow GOP presidential candidate Donald Trump suggested that he shares blame for the 9/11 terror attacks.

Bush, a former Florida governor, called Trump’s criticism “pathetic.”

The front-running Trump made his comments earlier Friday while speaking on Bloomberg Television about how and why, if elected, he could best handle national emergencies.

“Blame him or don’t blame him, but (Bush) was president,” Trump said. “The World Trade Center came down during his reign.”

Jeb Bush responded on Twitter, saying “How pathetic for @realdonaldtrump to criticize the president for 9/11. We were attacked & my brother kept us safe.”

This is not the first time Bush has during his 2016 campaign had to defend his older brother, in trying to distinguish himself from the Bush family political dynasty and be his “own man.”

In the second GOP presidential primary debate, Bush defended similar criticism from Trump, after he acknowledged that his foreign policy advisers would likely come from the administrations of his brother George W. and his father, former President George H. W. Bush.

“You remember the rubble” at the World Trade Center? He sent a clear signal that the United States would be strong and fight Islamic terrorism, and he did keep us safe,” Bush said to huge audience applause.

Trump responded: “You feel safe right now? I don’t feel so safe.”