Shuttle

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

FIG. 2 is an alternate perspective view thereof;

FIG. 3 is front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a side elevation view thereof;

FIG. 6 is an opposite side elevation view thereof; and,

FIG. 7 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. No bottom view of the claimed design has been included because this view only shows unclaimed portions of the design.