U.S. Naval Rear Admiral Grace Hopper was a remarkable woman who served her country until the age of eighty and developed many of the earliest languages and applications now common in computer science. She was born on December 9, 1906 and became a math professor at Vassar. During World War II she joined the Navy Reserve and eventually found herself working in 1944 as one of the first computer programmers at Harvard. She and her department members developed early languages like MATH-MATIC and FLOW-MATIC. She returned to active service on two occasions after brief and undesired retirements. When she left the Navy she was eighty years old. After her death on January 1, 1992, Hopper was honored in several ways. The USS Hopper, a guided missile destroyer, was named after her as was the Cray XES Hopper Super Computer. She was posthumously awarded the Presidential medal of Freedom by President Obama.