Several shots from different angles of inside walls of Dwight D Eisenhower Lock as water level drops rapidly. ZOOM IN to CS of water level dropping along wall. TILT UP to LAMCS of employee on footbridge. ZOOM OUT to MS of inside of lock as water level drops. LACS of upper part of inside wall of lock, filmed from boat in lock. ZOOM OUT and TILT DOWN to MS of lock gates. LACS of upper part of gates opening. ZOOM OUT and TILT DOWN to MCS of gates opening, two pleasure boats leave lock.