haha awesome, sweet video and a great project. Its kind of like the refugee camp pill delivery quad we prototyped at MHacks. 2 big questions: 1) how do they handle motor failure, drones falling out of the sky? 2)How do they auto land? Its too soon for some sort of real time obstacle avoidance / image processing / auto landing without heavy lidar, and a lot of compute. What about range? These drones only fly for max 20 minutes at 20mph so you'd have to live within 3 ish miles.