On March 22, 2016, a flight carrying Neffenger arrived at Brussels Airport during the dual bombing that occurred at the airport. Neffenger was in Brussels to meet with European Union counterparts. Testifying a few days later in front of the United States Senate Committee on Commerce, Science, and Transportation, Neffenger said, “I will tell you being there that day, seeing the devastation, seeing the chaos of the airport environment and the evil behind it was a stark reminder of the importance of the work we do every day to protect travelers.”