Patricia Arquette, Senator John McCain, and Julianne Moore explore their genealogical heritage with Henry Louis Gates, Jr.

Guests: Kehinde Wiley, Julianne Moore, Bill Hader. Henry Louis Gates, Jr. explores the roots of actor Julianne Moore, comedian Bill Hader, and painter Kehinde Wiley, revealing how their ancestors’ military service left an indelible mark both on their families and on their country. (S03E06 was also titled "War Stories." Kehinde Wiley originally appeared in S05E09. Julianne Moore originally appeared in S03E06. Bill Hader originally appeared in S03E04.)