A maintenance operator for the Medium Capacity Fleet signals to a crane operator to lift a cage used for underwater inspections at Montgomery Locks and Dam, operated by the U.S. Army Corps of Engineers Pittsburgh District, on the Ohio River in Beaver County, Pennsylvania, Aug. 2, 2021. The medium fleet crew began work at Montgomery L/D in late July, and they will spend approximately a month to replace and repair components of the gate system and valves. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)