ARLINGTON, Texas -- Sgt. Lindsay Robertson, a Soldier assigned to the 4th Brigade Combat Team, 1st Cavalry Division, sings the national anthem as part of Military Appreciation Day during the opening ceremony of the National Football League game playe...

ARLINGTON, Texas -- Sgt. Lindsay Robertson, a Soldier assigned to the 4th Brigade Combat Team, 1st Cavalry Division, sings the national anthem as part of Military Appreciation Day during the opening ceremony of the National Football League game playe...