NBC will premiere its top-rated summer series “America’s Got Talent” for its 14th season on Tuesday, May 28 (8-10 p.m. ET/PT). “America’s Got Talent” has remained summer’s No. 1 alternative show for 13 seasons. The eighth season of NBC’s “American Ninja Warrior” will launch on Wednesday, May 29 (8-10 p.m.) before moving to its regular timeslot on Monday, June 10 (8-10 p.m.).