NBC has ordered a second season of summer series The Night Shift,  which is in the back half of its eight-episode first season. The second-season order is for a bulked up 14 episodes;  no scheduling was announced. The Night Shift is the No. 1 new scripted series on broadcast TV so far this summer in the demo and total viewers, with a 1.7 rating and 7.9 million viewers. It’s tied for 12th place among broadcast primetime shows on in the demo and ranks No. 4 for the summer among broadcast networks in overall audience.

Originally ordered as a midseason show in spring 2013, the series got pushed to this summer. Back in April, The Night Shift exec producer Jeff Judah insisted he loved the idea of his big ensemble medical drama running on the broadcast network in the summer. “There are not as many shows on the networks,” he told reporters at NBC Press Day. “It may not get lost as much, maybe get a chance to be seen by more people — we love it.”

The Night Shift, about the men and women who work graveyard at San Antonio Memorial, got its series order as part of a four-show deal between NBC and Sony TV in May 2013 that included pickups of The Blacklist (with guaranteed Monday 10 PM slot), Welcome To The Family and a renewal of Community. The Night Shift pilot tested very well, with Irish actor Eoin Macken in the lead as adrenaline junkie T.C. Callahan who, after a grueling tour of duty in the Middle East, now works in the ER. Creators Gabe Sachs and Judah executive produce with Pierre Morel.

Judah has a pal who’s an ER doctor in Atlanta who regales him with stories about his work that are “heartbreaking” and “funny,” about people who often are drunk or  high and about the “adrenalin junkies”  who work in the ER on the night shift. “It gives our show more of a blue-collar feel,” he said.

The Night Shift is set in San Antonio, rather than a major market; in the series, the hospital ER serves 22 counties and must often get medical care to someone via helicopter. “We wanted to bring the ‘golden hour’ to the patients — to bring the military aspect of the show,” Judah explained back then.