Revised Version of The Crimson Dawn.
When Crimsonlight, who had been serving as an elite guard all of his life, is suddenly without fair warning re-positioned to Ponyville to guard the elements of harmony for an undisclosed reason, he is forced to deal with something that comes natural to all ponies but him.
Friendship.

Warning : Prototype spoilers ahead.
Alex Mercer, after bringing down a nuclear warhead headed for NYC, struggles to survive the ordeal, with unexpected results.
Alternate ending to Prototype.