By ADRIANA GOMEZ LICON, TERRY SPENCER and CURT ANDERSON, Associated Press MIAMI (AP) — Relatives of a UPS driver killed after robbery suspects took him hostage on a wild police chase across South Florida questioned Friday why officers had to unleash a torrent of gunfire when the truck got stuck in rush-hour traffic. Both suspects, 41-year-old cousins Lamar Alexander and Ronnie Jerome Hill, were killed