police officers there on the platform will going off basically telling people to kind of stay clear the area. so very close proximity and the arena is right in the city center of manchester, so it is a very kind of well-built area, a lot of things close by and victoria station is extremely close. >> working our way out we were right by the door, a massive explosion and everybody was screaming, it was a huge explosion, he could feel it in your chest. it was chaotic. everybody was running and screaming and just trying to get out of the area. the capacity of an arena like manchester arena, there would've been thousands of people in there. >> is a very big concert venue. while the biggest pop stars go there.