Modifies a noun

• artillery: American antiaircraft artillery met the challenge by destroying more than 300 enemy aircraft.

• gun: Many cities like Dresden had lost all their antiaircraft guns to the eastern front.

• battery: A hundred sorely needed heavy antiaircraft batteries had been sent to northern Italy.

• missile: The Patriots, originally designed as antiaircraft missiles, had limited success in downing the incoming missiles.

• fire: King said antiaircraft fire has posed the most danger.

• defense: The finest fighter aircraft or antiaircraft defenses were of no avail against bomber hordes like these!