Step Assembly

FIG. 1 is a front view of a step assembly;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front perspective view thereof, shown in an environment of use.

The broken lines depict portions of the step assembly that form no part of the claimed design. The additional broken lines showing a litter device in FIG. 7 depict environmental subject matter only that forms no part of the claimed design.