<span class=normal> This makes it look like Salmans doing all action on his own <BR><br><p class=clear>&nbsp;</p>I think the most challenging aspect is to hide a visual effect, the whole point is that the audience enjoys watching Salman do these death defying activities. In a way, we can easily spoil the show, by stealing the credibility from the audience if they realize there is an element of trickery involved. Everything we do has to be hidden perfectly well, for example: the climax scene in which Salman leaps onto a plane while it takes off was shot with Salmans double on a motorcycle in a separate layer, a CG plane which was merged with the other layers in the compositing phase. This makes it look like Salmans doing all action on his own, the challenge is to hide what we do, and only we the filmmakers would know what we have done. Kabir is quite open to taking suggestions and he gives the creative freedom for us to experiment on a few things and comes back to tell whether he likes something or not. We got a lot of inputs from Kabir and his direction team, he was very involved in the entire process and we could call him anytime if we had queries on improvising a scene. </span>