Si Robertson to appear with Diamond Rio at Rock Springs Church Sunday, June 29.
District attorney said no evidence tied Travis Ball, who is now in prison, to Lamar County fire.
Annual Celebrate America event is Saturday at The Rock Ranch.
Evan Morgan honored after sheriff, others watched him salute entire procession for slain police officer Kevin Jordan.
'Dangerous' felon Billy Lee Owens captured after long day in snake-infested Finney Lake swamp.