article_snippet.sent: What the underground shelters did was introduce season tickets -
article_snippet.sent: the underground shelters were issued to locals, although you could write in if you had difficult circumstances.
article_snippet.sent: It was really only a way of damping down demand, nobody was denied entrance in an alert.
article_snippet.sent: There were first aid posts, electric lighting and flush toilets, which people living in back-to-back cottages of town centres wouldn't have had at home.'