In this case, they had enough fuel to return to the launch site but they used the barge because they couldn't get permission to return to Vandenburg. http://obs

In this case, they had enough fuel to return to the launch site but they used the barge because they couldn't get permission to return to Vandenburg. http://observer.com/2016/01/breaking-spacex-fails-a-third-time-to-land-falcon-9-rocket-on-drone-ship/ http://observer.com/2016/01/breaking-spacex-fails-a-third-ti...