Instructions
Head toward the white circle with the dot you can see onscreen. Press the "Select" button on your PSP when you are halfway up the game map. Use the D-Pad to scroll along to the "Cog" icon in the top menu bar. Select it and scroll to "Codec Call" in the highlighted "Select Button" assignment bar; this will make the "Select" button your default button for making Codec calls.
Press "Select" to use your Codec and listen to Miller as he talks to you.
Walk toward the white circle with the dot slowly. Keep pressing the "Select" button to reactivate the Codec and keep Miller and Chico talking.
Approach the white circle with the dot and crouch down by the cliff near it ("Down" on the D-Pad) so you are out of its line of sight.
Wait for the ghost of the soldier to float by and keep pressing the "Select" button until a message flashes up at the bottom of the screen stating: "This is the End." You will be awarded the Neo Moss Camo at the end of the stage.