NASA Deputy Administrator Jim Morhard speaks at the podium during a briefing at the agency’s Kennedy Space Center in Florida on July 29, 2020, in advance of the launch of the Mars 2020 Perseverance rover and Ingenuity helicopter scheduled for July 30. Joining him are, from left, NASA Administrator Jim Bridenstine, and NASA astronaut Zena Cardman. Mars 2020 will lift off aboard a United Launch Alliance Atlas V 541 rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station. The two-hour launch window opens at 7:50 a.m. EDT. NASA’s Launch Services Program, based at Kennedy, is managing the launch.