Atlas V 551 with AHEF-4 – REPLAY

Here is a replay of the Atlas V launch with the AEHF-4 satellite going into orbit.

The AEHF-4 (Advanced Extremely High Frequency) is one of the US Air Force’s communications satellites.

Coming up: BEPICOLUMBO! Very early tomorrow or tonight for North American viewers and points west.

Coverage set to begin at 01:45 UTC on 20 Oct // 21:45 EST on Oct 19 for North America

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