[jyl]

Seems weird that these images can't be scanned by computer looking for any pixel that is blue. His plane was blue and white. Blue isn't a color that occurs much in nature. And it is probably a bright primary blue, not a gray-blue like some plants can be. Aren't the satellite images in color? (I mean, I realize the images viewable on Mechanical Turk may be B&W, but aren't the original satellite images in color?)