When two teenage girls showed up at her counter, airline worker Denice Miracle instantly knew that something was very wrong.
The duo, aged 17 and 15 had turned up at Sacramento International Airport in California with no identification. They were travelling alone, with just two small bags, and had two first-class tickets booked by another person using a fraudulent credit card.
They were one-way and multi-leg tickets, further ringing alarm bells.
"Between the two of them, they had a bunch of small bags. It seemed to me as if they were running away from home," American Airlines worker Miracle said.
"They kept looking at each other in a way that seemed fearful and anxious. I had a gut feeling that something just wasn't right."