How Long Do the Flags Fly at Half-Staff?

Although it may irk some of the former president’s detractors, flags across the country are still flying at half-staff in honor of Ronald Reagan. How long will they stay that way? In this 2001 “Explainer,” Slate’s Chris Suellentrop discussed proper flag etiquette, including the federal regulations governing how long flags must be lowered after the death of a president.