\r\nVisitors to Israel—or at least Jerusalem, or, OK, the Old City in Jerusalem—can reasonably expect to bump into a missionary or two. Chances are, though, those missionaries hail from elsewhere. In this, our fourth episode of Israel Story, called “A Man on a Mission,” we introduce three Israelis who are not religious but have pursued unusual hobbies with missionary zeal. One is a hitman-for-hire, another collects a highly specific classification of autographs, and the third is a professional whistler. This has earned them, variously, animus, accolades, and celebrity in far-flung places (here's the