A CH-47F Chinook helicopter from the Company B "Black Cats," 2nd Battalion, 227th Aviation Regiment, 1st Air Cavalry Brigade, 1st Cavalry Division, approaches a road in Presidio, Texas, to pick up sand bags, Sept. 22, 2008. The Black Cats are currently supporting flood relief efforts for the town of Presidio by dropping the oversized sandbags on a levee to keep the high waters of the Rio Grande River from flooding the city.