Striped covers for electrical cables turn a right-angle turn to the left towards power cabinets  which are numbered 1 to 6 at the European Space Agency's Europropulsion Ariane 5 rocket Booster Integration Building. Railings ensure that pedestrians keep to the  walkways without endangering health and safety, according to EU law. Elsewhere in this giant building the boosters that propel ESA rockets into space are integrated with their payloads.  ...