Photos: Launch boosts satellite for U.S. allies

For the fourth time this week, a rocket launch from Cape Canaveral was stopped with seconds remaining in the countdown Friday night, when a SpaceX Falcon 9 rocket automatically aborted its liftoff with a new GPS navigation satellite during the engine startup sequence.

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.

Air Force ground controllers have activated service aboard the newest Global Positioning System satellite, achieving that milestone for the final spacecraft in a dozen built in a manufacturing batch to update the constellation.