While the smoke has begun to clear at “60 Minutes” after three correspondents were fired, CBS News leadership now faces the challenge of finding journalists who can fill their shoes just three months before a new season starts. The venerable news magazine was plunged into crisis last week as longtime correspondent Scott Pelley confronted management about the May 28 firings of his colleagues Sharyn Alfonsi and Cecilia Vega along with the program’s executive producer Tanya Simon and her second-in-command Draggan Mihailovich. Pelley, who also accused CBS News Editor-in-Chief Bari Weiss of “murdering” the program, was terminated June 2 after a 37-year career at the network. He later gave an interview to The New York Times, accusing Weiss of “putting her thumb on the scale” for the Trump administration when guiding the editorial direction of stories. (CBS News denied Pelley’s accusations. But Paramount Chief Executive David Ellison, who has given Weiss a free hand in disrupting the CBS News hierarchy, found the turbulent situation concerning enough to personally reach out to veteran “60 Minutes” correspondent Lesley …