Launch and mission managers for NASA’s Ionospheric Connection Explorer (ICON) participate in a prelaunch mission briefing on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. From left to right are Karen Fox, NASA Communications; Will Ulrich, launch weather officer with the U.S. Air Force 45th Space Wing; and Don Walters, chief pilot of the L-1011 Stargazer aircraft. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.