The Navy's Cicada drone has reemerged looking smaller than ever. Navy scientists have been developing the tiny smart glider since 2006 and even performed a flight test back in 2011. This newest iteration, which has been presented at the Department of Defense's "Lab Day" last week, is the smallest one yet and can fit in the palm of your hand. The US Navy has always envisioned the Cicada drone, formally named Covert Autonomous Disposable Aircraft -- a completely different project from the Navy's LOCUST drones -- to be tiny, low-cost and ultimately disposable. Like the insect, it was designed to fly in swarms and do its job until it (or, technically, its battery) dies. Despite looking like an innocuous paper/plastic plane, it's loaded with sensors -- Agence France-Presse even calls it a "phone with wings."