LOS ANGELES - Six Flags is back in business.On Friday, the Texas-based theme park operator announced plans to reopen all 26 of its locations for the 2021 season, including five locations that stayed closed in 2020 due to continued coronavirus restrictions.The company further confirmed its intention of hiring "thousands of team members" for the upcoming season exclusively via online hiring events."Our guests and team members are ready for the return of fun and signature Six Flags thrills in 2021," said Senior Vice President of Park Operations Bonnie Weber in a press release. "Last year, we set the standard for operating our parks safely, and entertained millions of guests in adherence to government, and CDC health guidelines at 21 of our 26.