Forum:Season 5 prequel

There was an ad for season 5, where Jack is in the middle of a desert area, with his bag, when his phone rings. He picks it up and asks 'Who is this?'. Could someone tell me what this was about and/or direct me to somewhere on the web where I can watch it? Also could someone explain how it was discovered that Jack was alive? Thanks 172.159.189.202 11:17, 16 September 2007 (UTC)