“Watching ER again, for the first time in two decades, after becoming obsessed with The Pitt made me realize how long Noah Wyle has carried the character of John Carter with him—and how important that character has become to telling the under-discussed reality of mental heath issues plaguing our first responders,” says Alexander.

How ER co-stars Noah Wyle and George Clooney have supported each other amid their respective The Pitt and Good Night, and Good Luck successes

The Pitt star and producer Noah Wyle responds to Tracy Ifeachor's departure.

Ifeachor hinted at her exit last week when she shared an Instagram post bidding farewell to her character, Dr. Collins

Noah Wyle broke his silence on his 'The Pitt' costar — and onscreen love interest — Tracy Ifeachor’s surprising exit ahead of season 2

The actress, 40, isn’t returning as Dr. Heather Collins for Season 2 of the hit HBO Max show, “The Pitt.” Sources told TVLine that it was a creative decision, and not Ifeachor’s choice to leave the medical drama. On Wednesday, the British star hinted at her departure.

The hospital that inspired "The Pitt" has the longest wait times in the city, though long visits are common across the major health systems.