If you guessed that they all share a background in engineering, you are correct.
Engineers find solutions to technical problems in our world.
In short, without engineers we would live in a society that would be far more unhealthy, challenging, dangerous, and a lot less fun. According to the US Department of Labor, nearly 1.4 million engineers work in the United States today in more than 25 major engineering specialties. Most engineering jobs require at least a bachelor's degree in engineering. But engineers benefit by earning much higher starting salaries than workers with equivalent degrees in other professions. Job opportunities for qualified engineers are predicted to be strong in the coming decade.