I like to put something in the table, such a peg or bolt, to keep the vise from whipping around should the bit ever catch.
The vise, of course, is not a balanced load, so it starts to shake pretty bad, and if you don't have the nerve to turn it off, the bit can snap, and the vise, or drill press go flying.
I once saw a guy try to grab the spinning work piece, after his drill bit caught. That is not a good idea, either.