'I'm so lucky to be here unharmed' - train attack survivor praises hero passenger

Teenage train attack survivor lauds hero passenger for saving her from harm during a knife attack on a train near Huntingdon. Astrid, the survivor, praised Stephen Crean for his bravery in confronting the attacker and giving them time to escape. Astrid expressed gratitude for Crean's actions, acknowledging that without him, she and others could have faced serious injuries or worse.