For each of the last five years, Morgan, Lewis & Bockius chair Jami Wintz McKeon has hosted a rising female leader from a different country at the firm’s offices on the East Coast. Every time, McKeon says, she finds herself learning something new.

As a the sole law firm leader participating in the Global Women’s Mentoring Partnership, a joint initiative from the U.S. Department of State and Fortune Magazine, her participation is aimed at giving a mentee—this year, South African attorney and consultant Lerato Thekiso—an up-close glimpse of how one of the largest law firms in the world operates.