Berlin-based photographer Simon Menner worked with two snipers in the German Army to create this rather brilliant photo series (which is ever-so slightly reminiscent of Monty Python's 'How not to be seen' sketch).
"Even though they are invisible due to their professionalism, there are hidden snipers in every of these images," Menner explains. "They are aiming at the camera and therefore at the viewer."
*Gulp*. Now look at the pictures and see if you can you spot the snipers...