"Rickles backs off"
RICKLES: "Nothing, nothing (fading off)
YOU: As I was saying .....
R&R: By being calm and professional you have cut the Sniper off from his ally in the room and created a contrast between his inappropriate childish behavior and your professional behavior. Congratulations. At this point you can return to making your presentation.
YOU:
R&R: Make sure you try the Relevancy Challenge. This is a very important strategy.