HOUSTON - The Coast Guard is responding to a downed power line in the Houston Ship Channel, Oct. 3, 2010. Coast Guard Sector Houston-Galveston was notified at 6 a.m. that a barge had struck highline electrical tower 197 in Baytown. The tower supports power lines that cross the Houston Ship Channel. U.S. Coast Guard photo by Petty Officer 2nd Class Prentice Danner