It's a brief clip, less than a minute long, and is preceded by images and symbols that we're fairly certain someone is hard at work decoding right now. Some of the footage looks like costume test stuff, with Elba standing in his space suit and turning around for various angles, but an off-camera voice asks questions like "Blood type?" "Years in the service?" All the while, unseen medical personnel prod him and attach electronic sensors to his forehead. The best moment is when he lights up a cigarette in this clearly sterile white room.
While the footage looks to have been B-roll stuff for the movie's extensive viral marketing campaign, we can't be too sure, and we'll be interested to see where, on the eventual Blu-ray release, this sequence ends up.