Brandon Bell/Getty Images(AUSTIN, Texas) Members of the Texas National Guard deployed to the southern border under Gov. Greg Abbott's controversial immigration initiative, Operation Lone Star, are raising several concerns about their mission, including reports that some guardsmen have died in suspected suicides. The Texas National Guard and the Department of Public Safety have been collaborating under Operation Lone Star to stem what they describe as the flow of undocumented immigrants coming across the southern border and to combat drug trafficking. ABC News has spoken to three soldiers in the Guard who asked that their names not be used so they can talk freely about the issues they say are affecting morale among some of their fellow service members deployed to the border. They say those problems have ranged from pay delays to poor housing arrangements and inadequate training to assist Border Patrol in apprehending immigrants. Some of the guardsmen who spoke to ABC News say wor