Meet the intriguing presidential candidate you haven’t seen on the debate stage

You may not know Joe Sestak, though he is running for president of the United States. Sestak—call him Joe though, he insists—has been a congressman, a 3-star admiral in the Navy, a military adviser to former US president Bill Clinton, a college professor, a PhD student in political economy and government, a husband, a father, a wanderer, a global backpacker, and a long walker who crossed 422 miles of Pennsylvania by foot to meet with his constituents. If former vice president Joe Biden is considered promising because he is a moderate alternative to the Democratic Party’s progressive candidates and seems “electable,” then the other Joe should theoretically be among the top Democratic contenders.