Marg Helgenberger — American Actress born on November 16, 1958,

Mary Marg Helgenberger is an American actress. She is best known for her roles as Catherine Willows in the CBS drama CSI: Crime Scene Investigation and the subsequent TV movie Immortality and as K.C. Koloski in the ABC drama China Beach, which earned her the 1990 Emmy Award for Outstanding Supporting Actress in a Drama Series... (wikipedia)

Women loved that part 'cause K.C. was just sassy.
By the time May rolls around, I'm probably going to want to spend a month on an island. But if Steven Spielberg or Steven Soderbergh or any number of directors were to say 'Hey, there's this role, are you interested?' I'd be there in a flash.
I just cleared the slate and thought of her as a mother and went from there.
If I was working hard, she bled into my personality. I became more cynical.
There were a coupla times when I had had it. And when I'm pushed to the limit, I scream.