Maybe I just don't know about ALL the types of drones we have... But aren't they much MUCH bigger than the one in this photo?
I thought the Predator, for instance, was much bigger than a person.
Tactical UAVs for reconnaissance and surveillance are pretty small. The Pointer and Dragon UAV have wingspans of 9' an 11' respectively.
There was a "concept" paper a few years back about T-UAVs about the size of a cigarette pack.