Norwegian Cruise Line’s parent company wants to resume sailing from U.S. ports in July. On Monday, the company asked the Centers for Disease Control and Prevention for permission to return to U.S. waters for the first time in more than a year, since the early days of the pandemic. Norwegian says its cruise lines will require that all passengers and crew members vaccinated against COVID-19 at least two weeks before the trip. The company says its safety measures go beyond steps taken by others including airlines, hotels and restaurants. Norwegian plans to start U.S. cruises at 60% of capacity and raise that to 80% in August and 100% in September.