Lufthansa Airlines will operate the huge planes from Munich to Denver, New York, Boston, Washington, Los Angeles and Delhi.

The 737 fuselage made by Spirit AeroSystems was delivered to Boeing's factory in Renton, Washington on 22 January, where it will be assembled into the first prototype of the US Air Force's E-7A ...

At least two flights briefly traveled faster than the speed of sound as the jet stream sped up, but there would not have been a sonic boom.