I never heard of the "South Korean Gunshow" . Is it up in Houston ?
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Pharr Texas -- It was a scenario U.S. law enforcement had long feared: A fragmentation grenade from Mexico's bloody drug war tossed into a public place.
Only the grenade thrower's bumbling prevented bloodshed in a south Texas bar - he neglected to pull a second safety clasp. But the act was proof that one of the deadliest weapons in Mexico's drug battle is a real threat to the U.S., and investigators are stepping up efforts to make sure it doesn't happen again. While Mexican drug violence has been spilling across the border in the form of kidnappings and killings, grenades are a particular worry because they can kill large numbers of people indiscriminately, and they are a weapon of choice among Mexican cartel members.
and the best part >>
After the grenade bounced off the floor and landed on a pool table, an off-duty police officer picked it up and threw it back out the door. No one was hurt, no arrests were made, and authorities are divided about whether the targets were rival gang members or off-duty police officers.
http://hosted.ap.org/dynamic/stories/D/DRUG_WAR_GRENADES_IN_AMERICA?SITE=AP&SECTION=HOME&TEMPLATE=DEFAULT