Cantor Fitzgerald executive Ari Schonbrun got an early start Sept. 11. It was a good thing, too. With the Jewish holidays coming up, he had a lot of work to cram into a compressed schedule. So there was a lilt in his voice as he swung open the door of his Cedarhurst, L.
I., home, stepped out and yelled to his wife, Joyce, “I’m leaving!
” And there was a note of aggravation when she hollered back: “Did you do Baruch’s book order? You’re not leaving until you do the book order.