For a transatlantic crossing, the Concorde would be assigned a ~15,000-foot block of altitude; it started out at flight level 450 and gradually cruise-climbed up to between FL570 and FL600 over the mid-Atlantic before beginning to descend.

[…] and bring cheer and chillth to your parched guests. Lawn lollers as well as the strenuous tennis crowd react favorably to the clink of ice against glass, especially when they don't have to bestir themselves in the attainment thereof.

And I know the location of a treasure so splendid that just breathing its name in your ear will bring tears of joy to your eyes and a definite bulge in the trouser department.

When the widening is complete, the majority of the trains from Tees-side and the North which have hitherto had to be routed via the Leeds Northern line (Ripon, Harrogate and Wetherby) will be diverted over the main line via York. This avoids the necessity to provide banking engines on the Leeds Northern route and will result in speedier transit times and the more efficient and economical use of engines and train crews.