Tim Peters holds up a sachet of fertilizer-dipped seeds destined to be sent, covertly, to the "kitchen gardens" of underground churches inside North Korea. Photo: Andrew Salmon/The Washington Times
Korean official Park Jeong-kwon hopes for Korean success in the drone soccer championships taking place alongside the drone exhibition. (Photo by Andrew Salmon/The Washington Times)
A Korean Coast Guard official shows off a drone that can land in water and can drop flotation devices and first aid gear to shipwrecked sailors. (Photo by Andrew Salmon/The Washington Times)