While NASA works with the FAA to build a network for monitoring drones in the US, NASA is enlisting help from a cellphone carrier. The Guardian reports that Verizon joined the effort too, helping NASA develop the system that will make use of cellphone towers to keep tabs on both commercial and civilian UAVs. The pair reached an agreement last year to explore the potential uses cell towers, including communication and surveillance of low-altitude drones. The project is said to be in-progress at NASA's Ames Research Center in Silicon Valley with the first tests to take place this summer. In 2017, Verizon is scheduled to present a concept for using cellular connectivity for flight data, navigation and tracking before finalizing the system two years later.