Yes - those El Salvadoreans - since they are born with only 3 fingers on each hand, they have a very difficult time using tools that were designed for people with 5 fingers on each hand.
Or.... “In the last decade, most of the big U.S. airlines have shifted major maintenance work to places like El Salvador, Mexico, and China, where few mechanics are F.A.A. certified and inspections have no teeth.”
From a Vanity Fair article linked below.