Drug smugglers are turning to a sharp law enforcement tactic as they try to stop Texas law officers from chasing them.... Supervisory Border Patrol Agent Joe Trevino says agents in south Texas have had spikes thrown at their vehicles at least five times this year. Trevino told the Corpus Christi Caller-Times that at least 15 incidents were reported in 2009, in which 33 vehicles were damaged, including 13 civilian cars and trucks. Just one incident was reported in 2008...