“My heart breaks for the families, loved ones, and communities as our nation mourns this senseless violence,” Whitmer said. Our state grieves alongside those who lost loved ones and the entire Boulder, Colorado community.”On Monday, a gunman opened fire at a grocery store in Boulder, Colorado, killing 10 people. Michigan residents, businesses, schools, local governments and other organizations also are encouraged to display the flag at half-staff. To lower flags to half-staff, flags should be hoisted first to the peak for an instant and then lowered to the half-staff position. Flags should be returned to full-staff on Sunday, March 28, 2021.