intelligence. >> until u.s. intelligence zeroed in on this compound. >> an unusual compound, unusual in its security, unusual in its size, and, frankly, unusual in its location. >> its location, a half mile from pakistan's premier military academy in abbottabad. from miles in the sky, american spy satellites were watching. robert cardillo is the director of the national geospacial intelligence agency. here in the nga operations center, they make sense of the data that u.s. spy satellites beam back. >> we moved from spacial resolution to what we call activity resolution now. >> translation, it's not just about satellite photos anymore. now, the patterns of behavior they reveal are much more telling. >> when i worked in this business in the '80s, patterns were developed weeks at best,