What do I do with the photo

Hint 1 of 5:

Analyze it with CAD.

Hint 2 of 5:

Enhance the guard to right of Kirkland. Notice anything about the arm?

Hint 3 of 5:

Press + 46 times, the up arrow 8 times, and left arrow 16 times.

Hint 4 of 5:

The tattoo on the arm spells out the name Jackal. Research the name.