"I'm not intimidated easily, and I would join your fellowship program as a confident fellow. My residency training has prepared me well for any situation I will face in the intensive care setting. If I had to pinpoint one procedure that seems intimidating, it would be a cardiac catheter placement because there is no margin for error. I'm excited for the opportunity to learn this procedure hands-on from your faculty over the next three years."

Being intimidated by the things you will learn as a fellow is okay, but you don't want to come off as weak-minded or lacking confidence. You can express that you are intimidated by a procedure or two as long as you are ready and willing to take the time to learn from the expert faculty in this program. Your interviewers want to hear you speak confidently, so be sure to express that as you answer.