Jeff Foster, a business operations senior manager and 29-year Boeing employee, photographs a Boeing 707-120 Air Force One, at an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





A World War II era P-51 Mustang fighter plane stands in front of a modern 747-8 freighter and a 757 passenger jet at The Boeing Company's centennial celebration in Renton, Washington, U.S. July 15, 2016. (Photo by Alwyn Scott/Reuters)





Boeing 7-Series jets, 707 through 787, are pictured on the runway during an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Visitors climb inside a North American Aviation, B-25D Mitchell at an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. REUTERS/Jason Redmond





Historic aircraft do a flyby near a lineup of Boeing 7-Series jets during an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Boeing Everett plant employee Matt Carlsen stands up during ceremonies marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Boeing founder William Boeing is pictured during a video presentation at ceremonies marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Dennis Muilenburg, Boeing Chairman, President and CEO, speaks during ceremonies marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Boeing 7-Series jets, 707 through 787, are pictured on the runway during an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





A North American P-51B Mustang airplane is among the historic aircraft displayed at an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Historic aircraft do a flyby near a lineup of Boeing 7-Series jets during an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





A North American P-51B Mustang airplane is among the historic aircraft displayed at an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Boeing employees and guests watch historic aircraft flyby at an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





A 747 and other Boeing 7-Series jets are pictured on the runway during an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)





Nikita Ezhunov (R), 14, of Russia, sits inside a North American Aviation, B-25D Mitchell at an event marking the centennial of The Boeing Company in Seattle, Washington July 15, 2016. (Photo by Jason Redmond/Reuters)