A Coast Guard aircrew aboard an MH-60 Jayhawk helicopter conducts an overflight near the scene of a train derailment near the town of Mosier, Ore., in the Columbia River Gorge, June 3, 2016.
The overflight was to inspect the Columbia river to verify whether any oil product from the train derailment made it into the waterway.
U.S. Coast Guard video by Petty Officer 1st Class Levi Read.
Rail cars burn near the Columbia River Gorge after a 100-car train derailed near the town of Mosier, Ore., June 3, 2016.
Responders from federal, state, and local agencies are monitoring the situation and responding to all possible hazardous materiel pollution threats.
U.S. Coast Guard photo by Petty Officer 1st Class Levi Read.
Federal, state and local agencies are responding to a fire at a train derailment and potential oil spill near the Columbia River in Oregon, June 3, 2016.
The 100-car train reportedly carrying crude oil from North Dakota derailed near the town of Mosier.
U.S. Coast Guard photo by Petty Officer 1st Class Levi Read.
A derailed train reportedly carrying crude oil burns near the town of Mosier, Ore., near the Columbia River, June 3, 2016.
Federal, state and local agencies are responding to the derailment, fire, and potential oil spill.
U.S. Coast Guard photo by Petty Officer 1st Class Levi Read.
Federal, state and local agencies respond to the scene of a train derailment near Mosier, Ore., on the Columbia River, June 3, 2016.
The 100-car train reportedly carrying crude oil derailed causing a fire that closed down Interstate 84.
U.S. Coast Guard photo by Petty Officer 1st Class Levi Read.
Capt. David Berliner, deputy commander, Coast Guard Sector Columbia River looks over the Columbia Gorge at a burning oil train while aboard an MH-60 Jayhawk helicopter, June 3, 2016.
Federal, state and local responders are monitoring the scene where multiple rail cars derailed.
U.S. Coast Guard photo by Petty Officer 1st Class Levi Read.