Tim Reddick is an expert in working with whistleblowers and confidential informants. His presentation discusses defining whistleblowers and cooperating witnesses, the importance of finding and vetting them, developing policies to protect them, and handling potential issues that may arise. He emphasizes independently verifying information from sources and documenting all communications to maintain credibility and protect from pitfalls. Reddick also notes that incentives like payments and qui tam laws have been shown to reduce fraud losses and duration by encouraging whistleblowers to come forward.