interpretation involves art, science, and experience. for example, us intelligence used a discipline called "crateology" to recognize soviet missiles and bombers, from the distinctive way the soviets crated them for ocean shipment. dino brugioni gives an extensive account of imagery interpretation during the cuban missile crisis in his book, "eyeball to eyeball". the methodology he describes for counting missiles moving into cuba, emplaced there, and later removed are direct parallels to the way in which imagery is used for verification in arms control.