Meddock was in the 2nd Battalion of the Army's 75th Ranger Regiment. Meddock, who enlisted in the Army in 2014, was based at Joint Base Lewis-McChord in Washington state. He served as a machine gunner, automatic rifleman, gun team leader and most recently as a fire team leader.
His battalion commander, Lt. Col. Rob McChrystal, says Meddock's selfless service represents the best of the United States.
Meddock was on his second deployment to Afghanistan.