News Stories

  • June

    USACE Marks 250 Years with Pivotal Support to the Army’s Birthday

    As the U.S. Army celebrated its 250th anniversary June 14 with a birthday festival and parade in the nation's capital, the U.S. Army Corps of Engineers was hard at work behind the scenes and on the logistical front lines. In a powerful intersection of history and engineering excellence, USACE’s contributions helped ensure parade success while also symbolizing its own 250th anniversary of building and defending the nation.
  • May

    USACE Navigation mission critical to Armed Forces’ strategic readiness

    When the U.S. Army's 101st Airborne Division (Air Assault) needs to move over 1,000 trucks, trailers, and tons of equipment for a large training exercise, they rely on the cost-effectiveness and convenience of the nation’s waterways.
  • The Corps Environment – Spring 2025 edition now available

    The Spring 2025 edition of The Corps Environment is now available! This publication highlights how the U.S. Army Corps of Engineers is turning environmental challenges into mission-ready solutions. Content in this issue includes ongoing projects and initiatives from across the Army environmental community that are leveraging environmental stewardship as a force multiplier — enhancing military readiness, strengthening strategic partnerships and supporting community well-being.
  • USACE Completes Two-Week Regional Power Mission Exercise, Prepares for Upcoming Hurricane Season

    The U.S. Army Corps of Engineers (USACE) successfully concluded a two-week Regional Power Mission Exercise on May 16, enhancing its readiness to provide critical temporary emergency power in the wake of a major disaster.
  • U.S. Engineering Team Assesses Colón, Panama’s Infrastructure Challenges, Strengthening Bilateral Partnership

    A team from the U.S. Army’s 553rd Forward Engineer Support Team-Advance (FEST-A) drove around important parts of the city of Colón, Panama, surveying the stormwater and wastewater systems on May 13, 2025. The survey was designed to find ways to bolster the ongoing partnership between the United States and Panama while addressing one of Panama’s largest city’s long-standing infrastructure issues.
  • OPTIC: Transforming Mission Planning with Safety, Efficiency, and Innovation

    The proliferation of Unmanned Aircraft Systems (UAS) in civil works, emergency response, and military applications is the primary driver for development of the Operator’s Tool for Information Collection (OPTIC). Designed to meet operational needs, OPTIC leverages decades of experience to improve mission planning, operational tracking, and data-driven decisions for the U.S. Army Corps of Engineers (USACE).
  • April

    What is a Sapper? 250 Years of “Badass” Engineers

    In the U.S. Army Corps of Engineers, the term sapper carries weight. For 250 years, sappers have served as elite combat engineers, supporting frontline infantry in every war throughout American history.
  • March

    Double Duty: Chris Stewarts’ Service in and out of Uniform

    Chris "CJ" Stewart seamlessly balances his dual roles as a federal civilian logistics management specialist and an Army Reservist. Serving within the Resource Integration Division (RID) of the U.S. Army Corps of Engineers (USACE) Logistics Activity (ULA), Stewart's civilian duties involve assessing logistics through the Command Logistics Review Program (CLRP). Simultaneously, as a Motor Transport Operator (88M) in the Army Reserves, his military focus is also squarely on logistics. Stewart recently completed a year-long activation based in Poland, where his mission involved deterring, defending against, and potentially defeating adversarial aggression. His logistical support stretched across multiple countries, including Poland, Croatia, Slovenia, Lithuania, Latvia, Estonia, and Germany. During his deployment, Stewart held multiple critical command roles in addition to his regular duties, including SHARP Ambassador Program representative, Suicide Prevention Non-Commissioned Officer in Charge (NCOIC), Liaison Officer NCOIC, and Unit Movement Officer NCOIC.
  • USACE Aviation Program Office: Enhancing Efficiency and Compliance in UAS Operations

    The United States Army Corps of Engineers (USACE) Aviation Program Office (APO) plays a pivotal role in advancing crewed and uncrewed aviation missions across the organization. Established to meet the growing demands of Civil Works, Emergency Response, and Combatant Command operations, the APO serves as the central aviation authority for USACE, ensuring the safe, legal, and efficient operation of Uncrewed Aircraft Systems (UAS).
  • February

    The Corps Environment – Winter 2025 edition now available

    The Winter 2025 edition of The Corps Environment is now available! This edition features ongoing projects and initiatives that are proactively considering the environment and influencing partnerships in support of military readiness and community well-being.

News Releases

Nashville District Divers and the Maintenance Support Team work together to replace 18-ton debris screens at Wilson Lock

Nashville District Public Affairs
Published Aug. 18, 2020
USACE barge transports debris screen at Wilson Lock

FLORENCE, Ky. (Aug 12, 2020) A U.S. Army Corps of Engineers crane barge transports an 18-ton debris screen to shore after raising it from under 70-feet of water at the Wilson Lock (Photo by USACE/Daniel Barrios)

Removal of debris screen at Wilson Lock

FLORENCE, Ky. (Aug 12, 2020) Herb Thomason, a master pilot aboard a U.S. Army Corps of Engineers barge gives directions to Daryl Henry a crane operator as they lift an 18-ton debris screen from the water for replacement (Photo by USACE/Daniel Barrios)

USACE Crane barge removes a debris screen at Wilson Lock

FLORENCE, Ky. (Aug 12, 2020) An 18-ton debris screen is hoisted out of the water onto a U.S. Army Corps of Engineers crane barge at Wilson Lock after five decades of use underwater (Photo by USACE/Daniel Barrios)

Diver helps remove debris screen at Wilson Lock

FLORENCE, Ky. (Aug 12, 2020) From left to right, Shaun Apger, Dustin Kelley, and Ty Melton who are lock and dam mechanics and divers with the U.S. Army Corps of Engineers prepare to remove a dive helmet from Kelley after completing an underwater maintenance mission at Wilson Lock to remove an 18-ton debris screen (Photo by USACE/Daniel Barrios)

FLORENCE, Ala. (Aug 12, 2020) – A stoic, bearded man with tree trunk arms breathed steadily as he calmed his mind for the dangerous task to come. His eyes stared straight ahead with confidence as his diver helper strapped on the reserve SCUBA tank, then mounted a heavy metal dive helmet onto his water-tight neck collar. Like a knight being armored by a squire, Matt Chambers who is a lock and dam mechanic and diver was preparing for battle. Only this battle was going to be seventy feet underwater, and it was time to go to work.

In the blazing August heat, the U.S. Army Corps of Engineers Nashville District Dive Team and the Maintenance Support Team worked together to start the process of removal and replacement of multiple debris screens from Wilson Lock, one of the largest projects within the Nashville District’s area of responsibility.

The trash screens are an important component at the lock because they prevent trash, trees and debris from entering the culvert and damaging the valve components.  These heavy duty screens are from the original construction of Wilson Lock and have been in the water for over five decades and are due for replacement.  Each screen weighs 18,000 pounds and takes careful teamwork to remove. 

Mason Carter, the Maintenance Service Team coordinator with the Operations Division, Nashville District said: “The goal of the MST is to support the 14 locks we have within the District.  It requires an extreme amount of coordination with the lock staff, mechanics, dive team, as well as operations managers both on the Tennessee River and the Cumberland River.”

Carter explained how coordinating maintenance is ongoing and necessary for the locks to support the navigation industry. “It can be very challenging because the locks are old and we have to come up with creative engineering solutions to be able to continue to keep these locks open for the navigation industry,” Carter said.

According to Carter, the process to replace the screens is not easy and it takes careful communication between the Dive Team and the MST to make it happen. 

The first step is for the divers to inspect the screens and remove debris to allow the screens to travel unimpeded up the guiderail. The second step is to get the component out of the water, using the heavy lift capability provided by the MST, who had a 100-ton crane above on a USACE barge. 

At the beginning of the operations, the divers enter the water and assess the screen, rig shackles onto the lifting components, and then hook them to the block of the crane. They ensure debris is removed so the component rises cleanly out of its mounting position. Then with careful coordination with the crane, the crew raises it up slowly and safely.

The removal of the unit is dangerous work and must be done by professionals.

“USACE Diving is hazardous duty and the divers must go through extensive training and maintain their equipment with great care.” according to Kyle Tanner, the dive coordinator with the Maintenance Section of the Technical Support Branch, Nashville District. According to Tanner, they inspect their gear daily and before each dive. Safety comes first and the team takes every precaution and coordinates to ensure hazards are mitigated. “We mitigate risk by pre-dive planning, equipment maintenance, inspections, and everyone looking out for each other.” Tanner said.

Tanner explained that every member has a valuable role on the jobsite to ensure everyone goes home safely at the end of the day.

“The dive supervisor ensures proper communication between the crane operator and the diver,” said Tanner. “The tenders monitor the lifeline umbilical which provides emergency air and communications to the diver from topside” and they “provide pre-dive equipment checks, dress the diver, and provide support.”

Tanner pointed out that these screens where not designed to be repaired underwater. “When the components where emplaced, future maintenance was not factored into their design,” Tanner explained. “Not only is it a big job, but now they have to deal with very dangerous work conditions.”

Some of the hazards of the job include strong currents, deep depths, zero visibility, diving inside intakes, and decompression sickness. “Diving is one of the most dangerous jobs you can do at the Corps - everyone here is a volunteer, they take the job it seriously. They perform work others wouldn’t dream about doing, or would be too scared to do.” Tanner said.

There is no such thing as an expert diver according to Tanner.

“Accidents can happen to anyone out here, even the most experienced divers. It’s important we not get complacent when performing dive operations and control our emotions underwater,” said Tanner. “One small mess up can lead to a fatality, so we want to ensure diver safety completely every time we perform diver operations.”

Mason Carter said: “The replacement of all the screens will take weeks to accomplish, but there is nothing routine about what these guys are doing on a daily basis - its hard work, dangerous.”

 

(The public can get more water safety information at http://www.lrn.usace.army.mil/Missions/Recreation/WaterSafety.aspx and local lake information at http://www.lrn.usace.army.mil/Locations/Lakes.aspx. The public can obtain news, updates and information from the U.S. Army Corps of Engineers Nashville District on the district’s website at www.lrn.usace.army.mil, on Facebook at http://www.facebook.com/nashvillecorps and on Twitter at http://www.twitter.com/nashvillecorps.)


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