Gene Maddaus Senior Media WriterThe major entertainment unions issued a joint statement of solidarity with the International Association of Theatrical Stage Employees on Friday, as the craft union looks towards a strike authorization vote next week.The statement was signed by the heads of SAG-AFTRA, the Directors Guild of America, the Writers Guild of America, East, and the Teamsters.“On behalf of our hundreds of thousands of members working across film and television, we stand in solidarity