They used balloons: https://www.nytimes.com/2012/05/13/world/asia/in-afghanistan-spy-balloons-now-part-of-landscape.html https://www.nytimes.com/2012/05/13/worl

They used balloons: https://www.nytimes.com/2012/05/13/world/asia/in-afghanistan-spy-balloons-now-part-of-landscape.html https://www.nytimes.com/2012/05/13/world/asia/in-afghanistan...