The suspect in the deadly Allen, Texas, mass shooting was removed from the military over mental health concerns, according to a report. Mauricio Garcia, 33, served a short military stint, a source told CNN without specifying when or for which branch. Advertisement Garcia also went through firearms training to work as a security guard, CNN reported, citing the Texas Department of Public Safety. He worked for at least three companies, including Ruiz Protective Service in Dallas, for several months in 2015. “I don’t think there was anything remarkable about this guy,” Hector Ruiz, who runs Ruiz Protective Service, told CNN....