ATHENS - When Antonis Mavropoulos knew he missed the flight after arriving two minutes late on the boarding gate, the Greek man said he was initially enraged.

Boeing CEO Dennis Muilenburg has sought to assure the public of the safety of the Boeing 737 MAX series of aircraft after several countries have grounded the 737 MAX 8 in response to the crash of an Ethiopian Airlines plane on Sunday, a second crash of the plane in five months.