I can understand why Mr. Altwegg is upset when a successful program like THAAD is set back simply because of a target issue:

The Missile Defense Agency is struggling with lousy quality control among its contractors, its executive director said during today’s budget briefing.

David Altwegg, a highly respected missileer and engineer, told reporters that he and his colleagues stood watching a recent THAAD test. A drogue parachute pulled the target out of a C-17. “We all stood there and watched it fall into the water,” said an obviously disgusted Altweg. A failure review board was convened and found the test failed due to “a quality control problem.”

But THAAD was not the only program with a quality problem, Altweg said. “Across the enterprise quality is a concern,” he said. The companies working for MDA suffer from “a lack of attention to detail. Missilery is all about detail,” he said with controlled passion. Altweg would not identify any particular companies but made clear there were very few that do no have quality problems.

“We are working this problem assiduously,” he said, saying that MDA send experts to companies to help them improve, “but we continue to have quality problems.”  [DOD Buzz]

Keep in mind this is not the first time THAAD has been set back because of a target failure.  Flight Test 10 back in 2008 experienced a target failure as well.