Silentbarker 4

NROL-118 carries the second batch of Silentbarker satellites - 4, 5, and 6 - to geosynchronous orbit, bringing the constellation to six space-based space situational awareness assets. The first batch flew as NROL-107 on Atlas V in 2023, the last NRO mission on that vehicle; NROL-118 continues the program on Vulcan Centaur.