Sinclair Broadcast Group fired back Wednesday at Tribune Media, filing a counter-lawsuit against its former merger partner in the wake of the failed $3.9 billion deal to combine the two media giants.“We are... disappointed that Tribune, through its merit-less lawsuit, is seeking to capitalize on an unfavorable and unexpected reaction from the Federal Communications Commission to capture a windfall for Tribune,” said Chris Ripley, Sinclair’s president and CEO, in a statement.Earlier this month, Tribune Media cancelled its merger with Sinclair and sued the Hunt Valley, Md.-based broadcaster for $1 billion, alleging breach of contract.