How Do You Hide A Dragon?

So somewhere in a thick stack of stories that are yet to be written is a modern fantasy work that involves your average, red blooded, American soldier, who happens to be a dragon. Raised in the Midwest, went to a one room school-house, Johnny Cash, baseball, and apple pie. 
Now here is a question. How would that work in the modern world? Fifty years ago some cryptid aspect of a story could be written off as - "I grew up out in the Ozarks." But with an endless parade of cellphone cameras, satellites overhead constantly, and hunter's trail cams everywhere how could a full sized dragon hide it's existence for the 18+ years required to reach maturity?