Original sentence: Many of the damaged buildings were once again badly damaged by the 1993 Bishopsgate bombing the following year – both incidents contributed to the formation of the Traffic and Environmental Zone, the "Ring of Steel", in the City to protect it from further terrorism.The bomb attack killed three people: Paul Butt, aged 29, who was passing in the street; Thomas Casey, 49, a Baltic Exchange attendant; and 15-year-old Danielle Carter, who was waiting in a car in St Mary Axe (the London street).The next day, the IRA claimed responsibility in a statement from Dublin.The stained glass windows of First World war memorial in the Baltic Exchange suffered damage in the bomb blast; they have been restored and are housed in the National Maritime Museum
Edited sentence: Many of the damaged buildings were once again badly damaged by the Bishopsgate bombing the following year – both incidents contributed to the formation of the 'Ring of Steel' in the City to protect it from further terrorism.The bomb attack killed three people: Paul Butt, aged 29, who was passing in the street; Thomas Casey, 49, a Baltic Exchange attendant; and 15-year-old Danielle Carter, who was waiting in a car in St Mary Axe.The next day, the IRA claimed the blame in a statement from Dublin.The stained glass of the Baltic Exchange war memorial, which had suffered damage in the bomb blast, has been restored and is housed in the National Maritime Museum