@Masako_Hihashi: Just letting you know, Jack didn't throw the knife while under the PK shield, he's not that strong. Remember this from a few posts back "he knife in the wall beeped, a bomb attached to the knife exploded,
leaving the knife intact. The first field test of the reusable
exploding throwing knives was a success" Jack never picked it up and it had a second bomb attached to it.
@kashif1: I misunderstood it, I thought that the reusable part was about the knight being intact after the explosion. Since it's the same in terms of effect I'll leave it like it is (since my version seems a little bit more heroic and awesome)