What to Watch on Thursday: ‘Will & Grace’ returns on NBC, ‘The Vietnam War’ ends

Will & Grace (9 p.m., NBC) – Debra Messing, Eric McCormack, Sean Hayes and Megan Mullally reprise their infamous roles as Will, Grace, Jack and Karen in this 16-episode first season. There will also be a 13-episode second season.

Also on tonight . . .

The Vietnam War (8 p.m., UNC-TV) – In the finale, civil war continues in Vietnam as President Nixon resigns and North Vietnamese troops regain control of Saigon.

Grey’s Anatomy (8 p.m., ABC) – In the two-hour Season 14 premiere, Meredith and the team help focus on helping Owen’s sister.

Superstore (8 p.m., NBC) – The store has a grand reopening in the Season 3 premiere.

Great News (9:30 p.m., NBC) – In the Season 2 opener, a tough new female boss has big plans.

How to Get Away with Murder (10 p.m., ABC) – Analise returns to her family home in the Season 4 premiere and realizes she must make a tough decision to rebuild her life.

Nathan For You (10 p.m., Comedy Central) – Nathan helps a small town diner in the Season 4 premiere.

Chicago Fire (10 p.m., NBC) – Chief Boden makes a risky decision to save his men in the Season 6 opener.