Army Corp of Engineers "The U.S. Army Corps of Engineers has approximately 37,000 dedicated Civilians and Soldiers delivering engineering services to customers in more than 130 countries worldwide." "With environmental sustainability as a guiding principle, our disciplined Corps team is working diligently to strengthen our Nation’s security by building and maintaining America’s infrastructure and providing military facilities where our service members train, work and live. We are also researching and developing technology for our war fighters while protecting America’s interests abroad by using our engineering expertise to promote stability and improve quality of life."  Ref: USACE   The BorderTransportationSystem will be contacting and working with the USACE to assure that the system meets standards for the security of Mexico, the U.S.A., and the states that border the system. Index of ... Army Corps of Engineers