There's an eye exam chart out in the middle of this enemy camp that says Metal Gear Solid Four on it (of course)
[URL=https://i.imgur.com/sqwsAsl.jpg]
[IMG width=600]https://i.imgur.com/sqwsAsl.jpg[/IMG][/URL]
[URL=https://i.imgur.com/V7c8vRt.jpg]
[IMG width=600]https://i.imgur.com/V7c8vRt.jpg[/IMG][/URL]