A man (R) who pulled out a gun on a public bus tries to run after being captured by security guards in Guatemala City February 15, 2011. Robberies on buses are a daily occurrence in Guatemala, according to the GAM (Grupo de Apoyo Mutuo), an organization that monitors human rights abuses. Twenty-four passengers were killed and 110 injured while using public buses last year, according to GAM. REUTERS/Daniel LeClair (GUATEMALA - Tags: TRANSPORT CRIME LAW)