Plot hole: It would not have been possible for Bond to place his jet-pack on the roof of Jaques Bovier's mansion. If he flew up there, everyone would have heard him - it's very noisy. And since it's also quite heavy, it is hard to imagine that he would have time to climb the wall, place it there, and get into the mansion, during the same time it took Jaques Bovier to get back from the church - which he left before Bond did.
Jacob La Cour
15th Jan 2008