"...In his lab at Penn, Vijay Kumar and his team build flying quadrotors, small, agile robots that swarm, sense each...

"...In his lab at Penn, Vijay Kumar and his team build flying quadrotors, small, agile robots that swarm, sense each other, and form ad hoc teams -- for construction, surveying disasters and far more. At the University of Pennsylvania, Vijay Kumar studies the control and coordination of multi-robot formations" - http://www.ted.com/talks/vijay_kumar_robots_that_fly_and_cooperate.html
http://www.ted.com/talks/vijay_kumar_robots_that_fly_and_cooperate.html