Question: Which star of "Surviving: A Family in Crisis" was born on February 14, 1964 ?

Context paragraphs:
William Womack Heath: William W. Heath was born in Normangee, Texas, to John Al and Runie (née Hill) Heath.  On July 14, 1929, William Womack Heath married Mavis Barnett (February 14, 1908 to April 9, 1998) and they will be a lifelong couple.  After his death, Mavis will marry a 2nd time to David Harold Byrd on her birthday, February 14, 1974.

Vartan Malakian: Vartan Malakian (Armenian: Վարդան Մալաքյան, born February 14, 1947) is an artist and painter.  He is the father of Daron Malakian, guitarist co-founder of System of a Down and Scars on Broadway.  He was born on February 14, 1947 in Mosul, Iraq.

Donna Atwood: Donna Atwood (February 14, 1925 – December 20, 2010) was an American figure skater.  She was born Donna Arlene Atwood on February 14, 1925 in Newton, Kansas, to pharmacist Chester Atwood and Allie Atwood, his wife.  The family moved to Albuquerque before relocating to Los Angeles when she was 9.  She died on December 30, 2010, aged 85, at the Motion Picture & Television Country House and Hospital in Woodland Hills, California.

Zach Galligan: Zachary Wolfe "Zach" Galligan (born February 14, 1964) is an American actor known for his work in many 80s movies like "Gremlins".

Johnny Longden: John Eric "Johnny" Longden (February 14, 1907 – February 14, 2003) was an American Hall of Fame jockey who was born in Wakefield, Yorkshire, England.  His father emigrated to Canada in 1909, settling in Taber, Alberta.

John Groff: John Groff (February 14, 1890 – October 2, 1990) was a Brigadier General in the United States Marine Corps whose military career spanned from 1912 to 1946.  Groff was a highly decorated veteran of World War I, earning the Navy Cross, Distinguished Service Cross, Silver Star, and Purple Heart medals.  He also participated in the Banana Wars (in Mexico, the Dominican Republic, Haiti, and Nicaragua), and World War II.  At the time of his death in 1990 at age 100, BG Groff was the oldest surviving general officer in the Marine Corps.

Surviving: A Family in Crisis: Surviving: A Family in Crisis (also known simply as Surviving, and later released on VHS as Tragedy) is a 1985 ABC television movie.  Directed by Warris Hussein and starring Zach Galligan, Molly Ringwald, and River Phoenix, the film is described as a modern-day "Romeo & Juliet" story that examines the tragedy of teen suicide, and the loved ones left behind to pick up the pieces.

Thomas L. Ridge: Thomas Lee Ridge (February 14, 1915 – September 13, 1999) was a United States Marine Corps officer who was wounded in Okinawa during World War II in 1945.  He received the Silver Star for heroic conduct in the Korean War during street fighting in Seoul, Korea and the Legion of Merit with Combat "V" for his role in the defense of Hagaru-ri and the evacuation from the Chosin Reservoir area.  He served as an attache to Columbia and Ecuador.  After retiring from the Marine Corps in the rank of colonel in 1964, he worked as a Department of Defense civilian for 14 years.

Gylfi Zoega: Gylfi Zoega (born February 14, 1963) is an Icelandic economist who has gained prominence as an academic and active contributor to the economic policy debate in Iceland, especially during the Icelandic financial crisis of 2008–2010.  He appears in the film "Inside Job" which uses the Icelandic financial crisis as a lead-in to its focus, the 2008 economic crisis in the United States and its origins.

John Thorbjarnarson: John Bjorn Thorbjarnarson (March 23, 1957 – February 14, 2010) was a crocodilia conservationist known for helping rescue numerous species from the brink of extinction.  Thorbjarnarson attended Cornell University, and in 1991 he received his Ph.D. from the University of Florida.  Thorbjarnarson was a conservation officer for the Wildlife Conservation Society in Gainesville, Florida for 19 years.  He sought to preserve crocodile populations in Cuba (where he spent more than a decade doing research) and Brazil, and to educate people about crocodiles and to ameliorate some of their fear.  Thorbjarnarson traveled around the world and visiting swamps to help endangered reptiles after discovering that 23 species were in decline in 1988.  He traveled to Asia, Africa, and Latin America to protect endangered species; he visited more than 30 countries.  Thorbjarnarson wrote a book called "The Chinese Alligator: Ecology, Behavior, Conservation, and Culture" he wrote about how the Chinese Alligator was very important to the Chinese culture and history, as well as the biology and behavior of the species; the Chinese dragon legend was based on the Chinese alligator.  He died of falciparum malaria on February 14, 2010.  Thorbjarnarson's family set up a foundation for The Wildlife Conservation Society.

Supporting paragraphs: Surviving: A Family in Crisis Zach Galligan
Answer: Zach Galligan