The more powerful Atlas V 551 sent AEHF-4 closer to its final ... At around the three-minute, 28.6-second mark in the flight, the payload fairing separated from around the second stage and payload.

Like the five satellites before it, AEHF-6 was launched by United Launch Alliance, riding aboard an Atlas V rocket. For Thursday’s launch, Atlas flew in its 551 configuration, the most powerful ...