The Navy Research Lab has completed testing of a Balloon-launched UAV that in turn launches smaller UAVs. They're calling the project ADD (Autonomous Deployment Demonstration) A balloon carried an UASUSA Tempest UAV to 60,000 feet. On each of the Tempest's wings, a smaller CICADA Mark III autonomous glider was mounted (CICADA stands for Close-In Covert Autonomous Disposable Aircraft). The smaller UAVs were then launched and autonomously navigated to within 15 feet of predetermined waypoints. The goal is demonstrate that the robots could provide a low cost way of placing precision located sensors for reconnaissance. For more photos of the operation, see the Navy's press release