Filed under: TransportationWe're not sure what's going on here, but we're not going to complain: Blimps are making a comeback. There are powerful hauling blimps, sure, but BAE is hopping on the autonomous systems bandwagon with its nimble GA22. The 22-meter (72 feet) dirigible is meant to carry high-tech surveillance equipment weighing up to 330 pounds at an altitude around 6,500 feet. The unmanned craft could also be used for sporting events, floods, and forest fires, says BAE. Right now the vehicle is radio-controlled but the the ultimat