Flags will remain at half-staff until sunset on Friday, July 24, according to David Smith, press secretary for Governor Bill Haslam.
"This will include five consecutive business days, honoring the life of each individual that was lost," Smith said.
Flags were initially slated to remain at half-staff until Thursday, but after Navy Petty Officer Randall Smith succumbed to his injuries, officials extended the period of mourning by an additional day.
The original order to lower flags to half-staff was issued on July 17.
Read more about the attacks on Chattanooga military facilities