A Coast Guard Jayhawk helicopter crew conducts an overflight to assess the Port of Beaumont, Exxon Mobile and the Jefferson Rail Port along the Neches River Sept. 1. 2017. Overflights provide Coast Guard personnel and other agencies vital information to determine if products were released into the area from Hurricane Harvey flooding the region. U.S. Coast Guard photo by Petty Officer 1st Class Charly Hengen.