Nearly 20 years ago, a Secret Service agent, the president's chief of staff and a military aide huddled on board Air Force One to decide who was going to tell former President George W. Bush that Secret Service supervisors had determined it was too dangerous to return to Washington, D.C.
Moments earlier, Eddie Marinzel, the lead Secret Service agent on the president's detail, stood to the right of Mr. Bush in a now-iconic moment from 9/11. Chief of staff Andy Card had just informed Mr. Bush about the terrorist attacks as he was reading to elementary school students in a Florida classroom.
"When I saw the look on the president's face I knew that there was something that was bad," Marinzel said.