Watch a replay of the Soyuz launch and abort

Boeing engineers have completed hotfire testing on a flight-like model of the Starliner crew capsule, clearing a major hurdle before a pad abort test and a demonstration flight to the International Space Station later this summer, Boeing announced Friday.

In what came across as a combination pep rally and old-time revival, Vice President Mike Pence asked flight controllers, engineers and astronauts at the Johnson Space Center Thursday to “rededicate” themselves to carrying out the Trump administration’s drive to establish a permanent U.S. presence around the moon in the early 2020s before eventual voyages to Mars.

Concern about a possible ammonia coolant leak Wednesday prompted astronauts on the International Space Station to evacuate the U.S. segment of the complex and shelter in the Russian portion of the outpost while flight controllers scrambled to untangle initially confusing telemetry.