Local authorities are warning officers to be on the lookout after a minor train derailment in Garland was believed to have been caused by someone tampering with the track.
The October incident on a Kansas City Southern line is being investigated by the federal joint terrorism task force.
"It could have been very serious," said Officer Joe Harn, a Garland police spokesman. "Does it tie in to any terrorist group or something? Right now, we simply don't know. Is the possibility there? Certainly it is."
"Had the people, during the Revolution, had a suspicion of any attempt to war against Christianity, that Revolution would have been strangled in its cradle... In this age, there can be no substitute for Christianity... That was the religion of the founders of the republic and they expected it to remain the religion of their descendants." Charles Carrol, signer of Declaration of Independence, framer of the Bill of Rights, delegate to the Constitutional Convention, U.S. Senator