Некој рекол: "кој работи, тој и греши", ама листава покажува дека повеќе се случувале грешки, отколку успешни проби од страна на Lockheed за THAAD:
31 July 1995 Failure Kill vehicle control test. The test flight was aborted. There was no target in the test.
13 October 1995 Success Launched to test its target-seeking system. There was no attempt to hit the target in the test.
13 December 1995 Failure Failed to hit a test target due to software errors in the missile's fuel system.
22 March 1996 Failure Failed to hit a test target due to mechanical problems with the kill vehicle's booster separation.
15 July 1996 Failure Failed to hit a test target due to a malfunction in the targeting system.
6 March 1997 Failure Failed to hit a test target due to a contamination in the electrical system.
12 May 1998 Failure Failed to hit a test target due to an electrical short circuit in the booster system. At this point, the U.S. Congress reduced funding for the project due to repeated failures.
29 March 1999 Failure Failed to hit a test target due to multiple failures including guidance system.
10 June 1999 Success Hit a test target in a simplified test scenario.
2 August 1999 Success Hit a test target outside the atmosphere.