Armed groups from the other side of the border are apparently taunting and firing weapons at Texas National Guard troops in South Texas. The Texas Department of Public Safety said yesterday that heavily armed groups wearing body armor are apparently trying to provoke troops stationed along the border as part of Operation Lone Star. Texas Rangers are investigating an incident from last week where two shots were fired at troops stationed in Starr County. DPS officials say more resources are being sent to areas seeing increased cross-border activity, while the Texas National Guard has plans to send more troops to the southwest portion of the border to help with the operation.