In this photo taken on April 27, 2015 and made available by Swedish Peace and Arbitration Society on Wednesday May 13, 2015, an underwater defense device is lowered into the water in the archipelago, outside Stockholm, Sweden. Swedish peace activists who argue that military hardware isn't the best way to deter Russian submarines have launched their own underwater defense installation: a gay-themed sonar system. (Swedish Peace and Arbitration Society via AP) The Associated Press