I've been kind of wondering this, too:
Questions That I Have for the Secret Service
1. Shouldn't you have jumped in front of that shoe?
2. Shouldn't you have jumped in front of that second shoe?
3. Second shoe = the one thrown after being removed from foot after first shoe was thrown.
4. Let's say people had three feet. Would you have allowed a third shoe to fly unimpeded?
5. While the shoe was in the air, were you like, "Oh, its just a shoe."