Martine Wright has described playing with her sitting volleyball team at the Paralympic Games as "one of the proudest moments I have ever had".
The Paralympian has come a long way since July 2007 when she lost both of her legs in the terrorist bombings on the London transport system.
She was one of the last survivors to be recovered from the wreck on a tube train at Aldgate and owes her life to the quick thinking of a first aider, but she credits sport with getting her through her "darkest days".
She told ITV News: "I don't think anyone should ever underestimate sport as a rehabilitation tool":
Martine received a huge cheer from the crowd when she appeared with the rest of her team to face Ukraine for their first game of the Paralympics.
They lost 3-0 on this occasion, but will be back at 4pm on Saturday to face the Netherlands.
Among the crowd was Elizabeth Kenworthy - the off-duty police officer who saved her life by tying a tourniquet around one of her legs.
Martine said afterwards: "I have goosebumps now and to come out here and represent my country in a sport I love is amazing."
Martine is part of Great Britain's first ever sitting volleyball squad. They have been playing together for less than three years.
Getting to this point has been an achievement in itself since the team had to fulfill "credible performance" requirements to earn their place in the Paralympic Games.
Martine fell in love with the sport at a Paralympic sport taster day and has been part of the team's journey ever since.