ANGLETON - The bereaved father who witnessed the death of his two young sons did not murder the drunk driver who killed them, a jury here in Brazoria County decided Wednesday, a coda that ratcheted up the emotions already thought to have peaked when both sides lost loved ones. Police failed to produce a murder weapon linked to the killing, gunpowder residue tests on Barajas' hands were negative and no eyewitnesses observed anything that transpired on the dark December night.