'This Is Us': See Jack's Brother Nicky in 'Vietnam' Sneak Peek (PHOTOS)

arrow - left
arrow - right
This Is Us - Season 3
Ron Batzdorff/NBC

Michael Angarano as Nicky, Milo Ventimiglia as Jack Pearson

This Is Us - Season 3
Ron Batzdorff/NBC

Jack looks like he’s having a serious chat with Nicky

This Is Us - Season 3
Ron Batzdorff/NBC

Nicky seems less serious

This Is Us - Season 3
Ron Batzdorff/NBC

Wonder what kind of wisdom he’s imparting

This Is Us - Season 3
Ron Batzdorff/NBC

He still looks concerned

This Is Us - Season 3
Ron Batzdorff/NBC

Jack on the ground in Vietnam

This Is Us - Season 3
Ron Batzdorff/NBC

He still has some time for lighter moments

This Is Us - Season 3
Ron Batzdorff/NBC

But then it gets serious

This Is Us - Season 3
Ron Batzdorff/NBC

Very serious

This Is Us - Season 3
Ron Batzdorff/NBC

Stanley Pearson (Peter Onorati) at the hospital

This Is Us - Season 3
Ron Batzdorff/NBC

That’s the Jack we’ve come to know

1 of

We've finally moved beyond Jack's (Milo Ventimiglia) death on This Is Us, and we'll learn even more about the Pearson patriarch in this week's episode.

In newly-released photos for the October 16 episode "Vietnam," fans get their first glimpse at Jack's younger brother Nicky, played by Michael Angarano (Will & Grace, I'm Dying Up Here). We'll also hear the tragic story of how Jack lost his brother in the war, and how that transformed him into the person he was when he met Rebecca (Mandy Moore).

Click through the sneak peek images above, and don't miss the all-new episode on Tuesday.

This Is Us, Tuesdays, 9/8c, NBC