"Eagle I" Helicopter in Mather Gorge

for the US Park Police

Examining a Young Green Snake at BioBlitz

for The Nature Conservancy

Attaching the Second Deck of the "Charles F. Mercer"

for the Friends of Historic Great Falls Tavern

Lock 19, C&O Canal

for the C&O Canal Trust

Crossing the Rapids Below Great Falls

for Cabin John Fire and Rescue, Montgomery County, Maryland

"Charles F. Mercer" Canal Boat Above Lock 20

for the C&O Canal National Historical Park

Snail Tracks in the Sediment of a Maple Leaf Under Water

for the Potomac Conservancy