This article was produced in partnership with the Pulitzer Center on Crisis Reporting. The military judge overseeing the Sept. 11 case at Guantánamo Bay in Cuba delayed litigation deadlines again on Friday, postponing the start of the trial of the accused mastermind Khalid Shaikh Mohammed and four accused co-conspirators until after the 20th anniversary of the attacks next year. “The coronavirus Covid-19 pandemic has continued to worsen,” the judge, Col. Douglas K. Watkins of the Army, wrote in a two-page order that extended deadlines for another 30 days, for a total of 300 days of delay since the start of the pandemic.