I would hope that is a sword in this ViDoc video, but just have a look on the size, compared to the "case" (i don't know how you call those things in english) just near this light ; the sword would be huge ! Moreover, it's just on a "conceptual map" , not on the finished version, so ... But, don't desperate, i've actually found a way to go [url=http://i85.servimg.com/u/f85/12/85/34/94/96586910.jpg]on the roofs[/url] during "Kizingo Blvd" mission, and i'm still looking for a clue watching over and over this game in theater mode. If there is at least one way where we can go through 2 invisible ceilings, there could be more, maybe during New Mombasa Streets mission ... Tepec, French glitchers community is still looking for that Sword Legend.