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Robert L. Sumwalt (U.S. government official) - Wikipedia
Former NTSB Chair Robert Sumwalt to Spearhead New Aviation …
NTSB Chairman Robert L. Sumwalt Leaves Government Service
Robert L. Sumwalt - Embry-Riddle Aeronautical University
Retiring NTSB Chairman Sumwalt Reflects on 15 Years With the …
NTSB Chairman Robert L. Sumwalt: Technology is changing …
Robert Sumwalt To Leave NTSB at End of June | AIN
Worldwide Graduate Robert Sumwalt to Serve as NTSB Chairman
Ex-NTSB Chair Taking Aviation Safety To Next Level at ERAU
Former NTSB chair to spearhead new Center for Aviation and …