Robert Beck's original assignment when he arrived at a sunny Rose Bowl on 10 July 1999 for the Women's World Cup final was to capture the crowd and take pictures of high-profile names like former US President Bill Clinton.
Beck could count on one hand how many football games he had attended before arriving at the stadium. "I got there and saw how many people were there, I was kind of surprised. I mean, it still didn't hit me how important an event it was."
The USA team had won a global tournament in 1991, which was retrospectively rebranded as the Women's World Cup, but had received little recognition for the title.
In 1995 they lost in the semi-finals of the World Cup to eventual champions Norway, but anticipation of the tournament taking place on home soil had built over the decade and, in 1999, the US team delivered and fought their way to the final.
Unusually for a World Cup, the third-place play-off between Brazil and Norway was played directly before the showpiece event. That game went to penalties and, along with a performance from Jennifer Lopez, meant the USA and China had to warm-up in the cramped corridors of the stadium.
US defender Chastain vividly remembers the conditions - "the water dripping from the ceiling, the mildew - you can smell it". She adds: "It's dark, it's dank… it's perfect. And this just became another one of those opportunities for us to embrace and say, 'let's go'."