She spent years on assignments around the world. As she approached the age of 60, the retirement age for U.N. workers, she realized that such a relatively young age may be a bit too young for retirement in the U.S. Aside from fulfilling family obligations, she packed her bags and headed out into the world again. Knaub, however, wasn�t exactly on a tourist mission. The countries she traveled to, Albania, Somalia, Kosovo and others, aren�t high on the list of "must see" locations for the jet set.