An aerial display team using old-fashioned map navigation mistakenly performed over the wrong festival in Switzerland last weekend.
원문출처 : https://www.cnn.com/2019/07/09/europe/swiss-aerial-display-scli-intl/index.html
원문출처 : https://www.cnn.com/2019/07/09/europe/swiss-aerial-display-scli-intl/index.html