From VOA Learning English, this is the Technology Report.The deadly tornado in Moore, Oklahoma has wind speeds of 400 kilometres an hour. 24 people were killed when the storm cut a path of destruction through the city.With only a 15 minutes' warning, people fled Moore, or took refuge in the most secure area of their homes or other buildings.The lucky ones took cover in underground shelters, or steel-and-concrete structures called safe rooms.Leslie Chapman Henderson is head of a non-profit group called the Federal Alliance for Safe Homes.The home safety activists is a big supporter of tornado safe rooms. She says they can help reduce the number of tornado deaths."The safe room is an interior room of the home that has been reinforced and tested and certified to withstand high wind and debris impact of the type that we've just seen happening in Moore, Oklahoma.In fact, we've already heard of families and stories of survival of people who were in safe rooms, either above ground, or below ground."Skye Strouhal of Moore was one of those people, he watched as the tornado moved in his direction,he and a friend run to a neighbor's underground shelter only minutes before the storm struck.
