In this special video, Hong Kong-based contributing editor and former NTSB intern Anthony Lam sits down with NTSB Chairman Robert L. Sumwalt to reflect on Sumwalt's 15 years of aviation accident investigation, transportation safety advocacy, and memorable moments and photos never before shared. At the end of June, Chairman Sumwalt will be retiring from the NTSB as one of the agency's longest-serving board members.

If you're interested in reading more about Chairman Sumwalt, check out this interview by AIN Senior Editor Kerry Lynch.