Determine if the sentence is true based on the text below:
Wallace Houston Terry has visited Vietnam.

Wallace Houston Terry, II (April 21, 1938 May 29, 2003) was an African-American journalist and oral historian, best known for his book about black soldiers in Vietnam, "Bloods: An Oral History of the Vietnam War" (1984), which served as a basis for the 1995 crime thriller "Dead Presidents".
It's impossible to say