Army Sgt. Sandra Coast graduated from U.S. Army Basic Combat Training at the age of 51, finishing training with one of the highest physical fitness test scores in her company after having to lose 30 pounds just to qualify for basic training.

“I was impressed, because she can do everything the younger soldiers do,” Army 1st Sgt. John Byars said of Coast, according to the Armed Forced Press Service (AFPS). “She never expected us to feel sorry for her. She even got one of the highest Army physical fitness test scores in the company. She is a prime example that age is just a number. She ran faster than soldiers young enough to be her kids.”