In 2013 — on the cusp of officially becoming a senior citizen — Dr. Frederick Lough swore in to become an active duty soldier. But that's not where his military career began.
Lough retired from the Army in 1987 after a 20-year career that began as a West Point cadet.
"By that time I was a trainer of heart surgeons for the Army," Lough said in the video below. "I reached a point in my Army career where the future really held more and more administrative responsibilities and I really wanted to continue using my hands."
He left the military to continue to do what he loved in a safe, private practice. He performed thousands of surgeries on his way to becoming director of his department at The George Washington University Hospital. He was living the definition of success in his second career.
But after the 9/11 terrorist attacks, the call to service began to tug at him.
"I had always considered myself a soldier, and now there was a need for military surgeons, and so I engaged the reserves about joining," he said.
He wasn't taking no for an answer.
"You want me to carry water?" he said about a conversation with recruiters. "I'll carry water."
He joined the U.S. Army Medical Corps Reserves and returned to service in 2007 at age 58. He deployed to Afghanistan twice, saving hundreds of lives on the front lines before going full active in 2013.
Watch Lough deliver his incredible service story and powerful message about personal growth in this short AARP video: