In an effort to update and upgrade its air defense systems, the U.S. Army delivered the first four operational Stryker anti-aircraft vehicles. 

The 5th Battalion, 4th Air Defense Artillery Regiment (5-4 ADA), under the 10th Army Air and Missile Defense Command, is the first battalion in the Army to test, receive, and field the Mobile Short Range Air Defense (M-SHORAD) system. The 5-4 ADA is based at Shipton Kaserne in Ansbach, Germany.

The M-SHORAD is placed on the lightly armored 8×8 Stryker vehicles. These variants are fitted with an autocannon and a missile launcher capable of firing Hellfire or Stinger anti-aircraft missiles. They will replace the 1980s-vintage Avengers, a variant of the 4×4 Humvee that can only fire Stingers. The Avenger was less mobile and much more vulnerable. 

At one point, the Army had 26 battalions of Avengers. But during the wars in Iraq and Afghanistan, where the enemy had little to no airpower, the military neglected its air defense capabilities. By 2017, active-duty units were down to just two battalions, with National Guard units having seven.