I claim the ornamental design for a flag, as shown and described.
FIG. 1 is a first view of the flag of the present invention;
FIG. 2 is the opposite side view, thereof; and,
FIG. 3 is the design of FIG. 1 in an alternate position of use showing the relationship of the two sides.
The broken lines in the drawing represent unclaimed environmental subject matter.
The characteristic feature of the design resides in a flag having a first side bearing the American flag and a second side bearing the Bill of Rights combined in an inventive arrangement.