On a breezy morning next to a cornfield in rural Weld County, Colo., Jimmy Underhill quickly assembles a black and orange drone with four spinning rotors.
"This one just flies itself," he says. "It's fully autonomous."
Underhill is a drone technician with Agribotix, a Colorado-based drone startup that sees farmers as its most promising market. Today he's training his fellow employees how to work the machine in the field.