Teammates help Josh Lesch, a diver with the U.S. Army Corps of Engineers Pittsburgh District, with removing his helmet after a periodic inspection at Locks and Dam 4 on the Monongahela River in Belle Vernon, Pennsylvania, May 25, 2021. The Pittsburgh District Dive Team is responsible for inspecting locks and dams on the Monongahela, Allegheny and Ohio rivers as well as inspect reservoirs and respond to emergencies, such as debris impeding locking operations. The diver team is made up of 15 members who volunteer to do the job as collateral duty in addition to their assigned, full-time role with the district. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)