According to Adam Seabrook, human resources consultant, executives tend to agree that the first 30 seconds of the interview are the most important to make a good impression. That's because an interviewer can form a strong opinion about you in that time frame.
Making a good impression is something that begins before you even enter the interviewer's room. It is very important to be kind, confident and objective right at the beginning of the interview.
Jimmy Doolittle of the Doolittle raid attack Tokyo. Japan believed emperor was untouchable. When the operation was launched and was successful they immediately had a change of thought. There was no way the would be able to beat America.