Three men who helped to disarm an attacker on a train from Amsterdam to France, from left to right, Anthony Sadler, Alek Skarlatos and Chris Norman, a British man living in France, pose with medals they received for their bravery at a restaurant in Arras, France. A fourth man, American Spencer Stone, was wounded in the take-down and remains in the hospital. Pascal Rossignol/Reuters/Landov hide caption

toggle caption Pascal Rossignol/Reuters/Landov

Atlas V (left); Falcon 9 (right) ULA; SpaceX hide caption

toggle caption ULA; SpaceX

The Two-Way

Rocket Wars: Will A Suit By SpaceX Get Off The Ground?

The California-based maker of the Falcon 9 is hoping to break up a monopoly on the launch market for national security satellites.

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