The Patriot missile system:

Question

A. was designed to shoot down airplanes.

B. failed to shoot down a Scud missile that killed 28 U.S. soldiers in the Gulf War.

C. failed because it had been left running too long.

D. All of the above

is it D

Answer 1

http://www.corpwatch.org/article.php?id=11110

Answer 2

Yes, D.