http://www.treesandthings.com/story/2008/5/2/12144/31821 After a major gun battle involving rival gangs and <a rel="nofollow" href="http://www.signonsandiego.com/news/mexico/tijuana/20080430-1519-bn30badcops.html">corrupt police</a> officials, more than 3,000 army troops <a rel="nofollow" href="http://www.latimes.com/news/nationworld/world/la-fg-tijuana30apr30,1,623461.story">rolled in</a> to the Mexican city of Tijuana this week. Mexico's sixth largest city has experienced nearly 200 murders already this year. en-us Fri, 2 May 2008 12:01:44 EST string http://www.treesandthings.com/search/