A man with Tourette syndrome says he was not allowed to board a flight at Reagan National Airport because he said the word bomb close to 100 times.

“I was telling myself in my head before don’t say bomb. When you try to suppress Tourette’s, it comes out even worse,” said Michael Doyle.

Doyle, 19, said he arrived at Washington, D.C.’s Reagan National Airport Thursday with medical documentation describing his condition. Doyle and his friend got through security but after sitting in the boarding area, a JetBlue pilot heard Doyle say bomb and refused to let him on the flight.