accident activity that we had in collingwood has cleared. no problems reported on the top stretch of the beltway leaving colesville road headed over towards 270. that's a check of your fox 5 on-time traffic. >>> this experimental aircraft starred all sorts of ufo rumors when of his spotted on the back of a flatbed truck on 270. turn out it was a drone. >> speaking of drones as you are about to see, the navy is mixing science fiction with technology to create underwater sea drones. inspired by the military's aircraft drones, the u.s. navy is aggressively pursuing self- -driven undersea vehicles. >> we do see these autonomous undersea vehicles as game changers. they increase the access and increase the range of our manned operational forces and they can keep man out of harm's way. >> the undersea vehicles are currently being used to detect mines and map the ocean floor. one recently navigated from cape cod to rhode island. >> these systems have alet of computer power in them. they have got very advanced sensors in them and they have autonomy t