U.S. Army Corps of Engineer surveyor Robert Nolan Hall, a lead land surveyor from the Jacksonville District captures depth readings from a computer onboard a U.S. Navy fast boat (FB-1) to survey operations in the Naval Station Guantanamo Bay harbor, Cuba. Before dredging in the harbor, crew members conduct pre-dredge surveys and evaluate their findings to focus on shoaling during the dredging operations. (USACE Photo by Mark Rankin)