President Donald J. Trump on Wednesday signed a proclamation directing that U.S. flags be flown at half-staff at the White House, all federal buildings, military installations, and diplomatic facilities worldwide until sunset on August 31. The order honors the victims of the mass shooting earlier the same day at Annunciation Catholic School in Minneapolis. Minneapolis police said the attacker, identified as 23-year-old Robin Westman, opened fire through church windows during a morning Mass, killing two students—aged eight and ten—and wounding 17 other people, including 14 children and three adults, before dying of an apparent self-inflicted gunshot wound. Authorities recovered a rifle, shotgun and handgun at the scene. Trump told reporters he had been fully briefed, noted the FBI’s rapid deployment, and spoke by phone with Minnesota Governor Tim Walz to convey condolences and offer federal assistance. Walz subsequently ordered state buildings to mirror the federal half-staff directive as the investigation proceeds. Federal and local investigators are examining the shooter’s motives while the Minneapolis community holds vigils for the victims. Flags will remain lowered nationwide through Sunday as the city and the country mourn the loss of life and await further findings.