Where can I watch DC Showcase: Adam Strange in United States?

On a rugged asteroid mining colony, few of the toiling workers are aware that their town drunk was ever anything but an interplanetary derelict. But when the miners open a fissure into the home of a horde of deadly alien insects, his true identity is exposed. He is space adventurer Adam Strange, whose heroic backstory is played out in flashbacks as he struggles to save the very people who have scorned him for so long.