'SEAL Team' Sneak Peek: Jason and the Navy SEALs Learn About Echo Team's Tragic Ambush (Exclusive)

David Boreanaz spoke to ET about the show's big shift earlier this month.

Things are getting real on SEAL Team. 

Only ET has a sneak peek at this week's episode of the CBS drama, in which Jason (David Boreanaz) and the rest of his team learn about Echo Team's tragic deaths -- and what it means for them. 

"Echo team was handing off to us. I just talked to Steve Porter yesterday," Jason notes as Mandy (Jessica Paré) and Lt. Commander Eric Blackburn (Judd Lormand) recount Echo Team's ambush. 

"The squadron is now down a full team, which, as you know, is an untenable situation. To remedy it, command has asked that your date of deployment be moved up," Blackburn reveals. "You leave in 18 hours. Any tidying up you need to do on the personal front, now's the time to do it."

See the full clip in the video above. 

ET spoke with Boreanaz about the show's shocking shift earlier this month, when he praised SEAL Team's risky move, and revealed that it brought him and his cast closer together. 

"We knew this was coming. We wanted this in order to push the envelope on a show that we are so proud of that takes chances, not only with our characters, and how that works going in deployment and how it becomes almost two shows in one,” he said. “That’s real life, it’s happened.”

“We’re exploring their journey and what really happens, how Tier 1 operators are pretty unique in the chain of command, as far as military is concerned. They put their lives on the line, they sacrifice for their family, their job is very high-risk,” he continued. “They protect the country, they take out terrorists and they deal with that on top of dealing with what’s in their head. That’s shining light into a lot of areas that will be interesting to watch and unfold.” 

SEAL Team airs Wednesdays at 9 p.m. ET/PT on CBS.

See more in the video below.