![Emil Nicolai Helms The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/709761f0c7084df98ff1b505fb29e7fb/preview/preview.jpg?s=680x)
The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/1b9eff104019426385fa837f06f00078/preview/preview.jpg?s=680x)
The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/0d59e39f471a45ebade1d20706b3a92c/preview/preview.jpg?s=680x)
The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms The Danish naval frigate F363 Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/7da2ec5ce2af4b1482bb13400f058cb2/preview/preview.jpg?s=680x)
The Danish naval frigate F363 Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms A swan swims as the Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/0e55b105b7a04ebb9c99afed4f2c3daa/preview/preview.jpg?s=680x)
A swan swims as the Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Helms The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/f46d3ebfb4ab4b83b660bb201b6c229c/preview/preview.jpg?s=680x)
The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/26f56f1611bb4c368543b15ec37a483a/preview/preview.jpg?s=680x)
The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/620ebc38f3df4280b4e9b9f62debf2c1/preview/preview.jpg?s=680x)
The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/83eed6963bd049ba8978d2936d1e6b45/preview/preview.jpg?s=680x)
The Danish frigate HDMS Niels Juel, number F363, is docked in Korsoer, Denmark, Thursday, April 4, 2024. Denmark's Armed Forces said a technical problem arose with a Harpoon missile on board the Danish frigate HDMS Niels Juel as it was taking part in a test while anchored in the Korsoer naval base. (Emil Nicolai Helms/Ritzau Scanpix via AP)
![Emil Nicolai Helms The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)](https://mapi.associatedpress.com/v2/items/81e99f0f53de442f9e16d5f4a4e9241c/preview/preview.jpg?s=680x)
The Danish naval frigate Niels Juel is docked in Korsoer, Denmark, on Thursday, April 4, 2024. A technical error on a navy missile Thursday spurred Danish authorities to issue a warning, saying there was a risk the missile could launch unintentionally — but not explode — resulting in fragments falling in Denmark waters. (Emil Nicolai Helms/Ritzau Scanpix via AP)