Nearly 3 million Americans served in the wars that followed Sept. 11. Three veterans reflect in The War Horse about what they saw, lost and still carry.
Sgt. Michael Emmanuel Swinton, 30, was killed Saturday during the controlled detonation of unexploded ordnance from a downed Iranian one-way attack drone.
Thousands of post-9/11 veterans are reaching retirement. Whether the lessons they learned during two decades of combat will be retained remains to be seen.