Answer:
Show title: China Beach
Actor: Marg Helgenberger
Explanation:
The show’s title is China Beach, which was a television series set in a hospital during the Vietnam War. It was aired from 1988 to 2001. The actress who won a Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series was Marg Helgenberger. She won in 1990 for her role as a part-time prostitute who is also a volunteer, Karen Charlene "K.C." Koloski.