Michelle Provost wasn't even flying on Thursday, but she was still worried.
"I have a 14-year-old niece coming in and she has flying anxiety and she's in the midst of this today," Provost says. "Hopefully her mom is shielding her from whatever's going on."
It was hard to avoid. Overnight, the basics — from medicine cabinets and makeup bags — were treated like potential tools of terrorists.
Even so, for some people, the scariest part was traveling without essentials. Ellen Katz and her daughters were headed to the beach.
"I'm more anxious about waiting in this line with a 5- and a 3-year-old than anything else," she says with a laugh. "But I guess we're going to be more secure today than maybe we were yesterday, so that's what we're hoping."
But underneath all those brave faces was a familiar sense of unease.
"Maybe we weren't supposed to let down our guard," Provost says.
Does this shake the faith of people?
"Certainly it does," Texas pastor Andy McQuitty says. "Unfortunately it does. But in shaking a person's faith, it may mean reestablishing it upon firmer foundations."
McQuitty sees it in his congregation with every reminder of the 9/11 attacks.
"There are all sorts of collateral damages that are done in this world by the actions and choices of evil people," he says. "We have to live in this world plowing through the wake of that evil."
The Provost family's hugs lasted a little longer today, a celebration for a trip that nearly didn't happen
"As a parent, you don't know what to do," says Gaylyn Reilly, Provost's sister. "At some point, I wondered if I should fly with them today. I can't believe I'm crying, but it was emotional — because at some point, you're thinking 'should I put them on the plane?' But we're here, and I'm just tired."