President Donald Trump on Wednesday minimized the severity of head injuries sustained by U.S. troops during the Iranian missile strikes on two Iraqi air bases as he was pressed on why he’d claimed no troops had been injured in the attacks.

“I heard they had headaches and a couple of other things … and I can report it is not very serious,” Trump said at a press conference in Davos, Switzerland, arguing that potential traumatic brain injuries are less severe than, say, missing limbs.