Past the jet age I can imagine the sky full of slow flying UAV’s, going from very large high-endurance HALE’s to tiny MAV’s and swarming ornithopters, providing communications relay, surveillance, border patrol, …

We could have a small, birdlike companion that can land on our shoulder but usually travels half a meter back- and upwards from us, and gives us 360 degee vision through a multispectral camera. It could be like a travel buddy watching your back, helping with navigation, vision and assessing the terrain.

Unmanned aerial vehicles come in many flavours, from the Nano Hummingbird to the Phantom Eye HALE.