Photos: Atlas 5 on the pad at sunset

Watch an Atlas 5 rocket launch the EchoStar 19 satellite on December 19, 2016. This view was captured by Spaceflight Now’s camera at the NASA’s Kennedy Space Center Press Site.

Plans to launch a Navy communications satellite aboard an Atlas 5 rocket early Monday have been interrupted by Tropical Storm Erika, an unpredictable cyclone with its sights on Florida.

The United Launch Alliance Atlas 5 rocket that will boost NASA’s latest communications relay satellite into space is targeting an Aug. 20 liftoff at 7:56 a.m. EDT (1156 GMT).