How old was Walter when he became a explorer?

James Cook was truly an "explorer" between the years of 1768 and 1779. During this time, he would been between forty and fifty-one years, having been born in 1728.

Walter Otta is 37 years old (birthdate: December 12, 1973).

Walter Hendl was born on January 12, 1917 and died on April 10, 2007. This would have been 90 years old at the time of death or 93 years old today.

16 on May 30, 1993.

General Vernon Walters was born on January 3, 1917 and died on February 10, 2002. This would have been 85 years old at the time of death or 93 years old today.