Blue Lantern.

A blaze of blue light and he appeared in the window, garbed in black and blue, a oddly gentle look on his face. "I am Saint Walker," he announced, "citizen, you have been found to inspire great hope. Will you become a Blue Lantern?"

The dark skinned man shook off his shock, "I can't, I have a obligation."

Walker tilted his head to the side, "How long of a obligation?"

"Four years," he admitted, "maybe eight."

"I'm sorry, our need is pressing," Walker sighed, then disappeared in a blaze of light."

"Michelle will never believe this," Barack Obama shook his head, leaving the oval office.