Jaitea said:

.......wait a second Ronster,.....don't forget Boba is working for Jabba also,.....he wouldn't consider shooting at the Falcon......one his few lines in the film...."What if he doesn't survive, he's worth a lot to me"

J

I thought Han already had a death warrant out on him and Vaders new Bounty was in conflict with the Jabba Bounty?

Perhaps that is why Vader say "I want them Alive" as he is more than likely had to offer a higher Bounty than Jabba to get what he want's knowing full well if trying to catch them alive was to go wrong the bounty hunters would get paid anyway on the death warrant. So like I said I don't think bounty hunters / assassins / killers have a clean cut job as what may happen can be unpredictable they also have to defend themselves