NCIS: Los Angeles already has the season 6 premiere in the bag, but it will be another four weeks before the fans will receive any set updates from the cast.

When Will Callen's Name Be Revealed On 'NCIS: LA'? Chris O'Donnell Hints At Answer On 'The View'

While many network series are heading back into the studio in July, NCIS: LA filmed the premiere and another Chris O'Donnell (Callen) directed episode back in April and the cast won't need to step infront of the cameras until early August.

"Very excited 4 S6 #NCISLA production 2 begin in 4wks," tweeted executive producer John Peter Kousakis on Tuesday.

Who Is Leaving The 'NCIS: LA' Team? Find Out The Shocking Answer For Season 6

Meanwhile, NCIS: LA's production coordination, Laura Napoli, followed up his remark with an announcement that the writers and production team would be returning to work in far less time.

"And less than 1 week for the office...gulp!" Napoli wrote.

When Callen and the team returns from the summer hiatus, both he and Sam (LL Cool J) will be fighting for their lives on a bomb-laden submarine. Trapped in the submerged terrorist attack, the agents will soon have to deal with a little bit of a leak. As their danger grows, Kensi (Daniela Ruah) and Deeks (Eric Christian Olsen) will be searching for their teammates from the air.

NCIS: LA will return to CBS on Sept. 29 at 10 p.m. ET. Click the video below to see a preview of the series' latest episode.

Tags: NCIS: LA NCIS: Los Angeles television CBS