For Peyton Gilbert, the battle over the Trans-Texas Corridor is reminiscent of the moment in 1836 when Lt. Col. William Travis drew a line in the sand at the Alamo and invited those willing to fight thousands of Mexican soldiers to step across. "That line in the sand is the Trans-Texas Corridor, and it's a threat to our sovereignty again, just like at the Alamo," said Gilbert, 14, who is from Whitehouse, near Tyler. Gilbert was among a large crowd of people who marched down Congress Avenue to the Capitol on Saturday afternoon to demonstrate against the proposed highway-rail-utility corridor...