Next-generation GPS satellite heads to space this week

Next Generation GPS
This March 22, 2016, photo provided by Lockheed Martin shows the first GPS III satellite inside the anechoic test facility at Lockheed Martin's complex south of Denver. The facility is used to ensure the signals from the satellite's components and payload will not interfere with each other. The satellite is scheduled to be launched from Cape Canaveral, Fla., on Tuesday, Dec. 18, 2018.