Shuttle

FIG. 1 is front elevation view of a shuttle showing our new and ornamental design;

FIG. 2 is a side view thereof;

FIG. 3 is an opposite side view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a perspective view thereof;

FIG. 7 is an alternate perspective view thereof; and,

FIG. 8 is a top plan view thereof.

The portions of the shuttle shown in broken lines shown in the figures attached hereto form no part of the claimed design.