Leo i pierdol…o

Booster 18 suffered an anomaly during gas system pressure testing that we were conducting in advance of structural proof testing. No propellant was on the vehicle, and engines were not yet installed. The teams need time to investigate before we are confident of the cause. No one…

— SpaceX (@SpaceX) November 21, 2025

Our next mission with @ulalaunch — and our first as Amazon Leo — is set for NET Mon. Dec. 15, with the launch window opening at 3:52 a.m. EST.

Fast facts on LA-04 (Leo Atlas 4):

➡️ Amazon’s fourth Atlas V launch
➡️ Seventh mission of the year
➡️ Adds 27 satellites to our… pic.twitter.com/idZCYPnIlH

— Amazon Leo (@Amazonleo) November 21, 2025