Danielle McKinnon, 93rd Signal Brigade administrative assistant, sings a rendition of “Up to the Mountain” during a Martin Luther King Jr. memorial event at Fort Eustis, Va., Jan. 10, 2014. The song references the emotions and message behind King’s last speech, “I’ve Been to the Mountaintop,” on April 3, 1968, a day before his assassination. (U.S. Air Force photo by Airman 1st Class Austin Harvill/Released)