Rear Admiral Grace Murray Hopper created the term "bugs" for exactly what they were: critters who got into electronic computer systems and builds and caused issues.
Admiral Hopper was the primary driver of the development of computer systems in the US Navy, beginning with UNIVAC, which she designed for Sperry-Rand and later created the computer language COBOL. She was called and recalled during the next nearly half a century to help the military develop and use computers.
She is one of my heroes.