Desperately needing a successful deployment to modernize the communications infrastructure for its citizens, Mexico is counting on the Atlas 5 rocket to safely launch a new satellite Friday.

United Launch Alliance has completed stacking of the major elements of the Atlas 5 rocket assigned to power NASA’s Perseverance rover toward Mars, but the mission’s launch date has been pushed back three days to July 20 after teams repaired an issue with a crane in the Atlas 5’s assembly building.

The 330-foot tall mobile service tower is rolled away from the United Launch Alliance Delta 4-Heavy rocket at Cape Canaveral’s pad 37B on launch day.