It was the CSS Virginia that was the Confederacy's first ironclad vessel, built on the hull of the Union ship, USS Merrimack, although it turned out to not be terribly useful in wartime.
Here are citations in APA format for three websites about technology careers. They were selected according to my own investigation on different technology careers.
The first one is for Computer Programmer
ComputerScience.org. (October 16, 2018). ComputerScience. Retrieved from Computer Programmer: https://www.computerscience.org/careers/computer-programmer/
The next one is for Web Developer
Doyle, A. (2018). The Balance Careers. Obtenido de Web Developer Job Description, Salary and Skills: https://www.thebalancecareers.com/web-developer-job-description-salary-and-skills-2061841
And finally this one is for Information Security Analyst
Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, Information Security Analysts, Retrieved from https://www.bls.gov/ooh/computer-and-information-technology/information-security-analysts.htm