Engineers are also taught that their actions have consequences and that they are accountable. After all, if the bridge you design falls down and kills everyone on it due to a faulty design, there's not exactly a whole lot of finger-pointing you can do. Not to mention the fact that your firm will probably be sued out of existence.
That being said, it doesn't look like Umar Farouk Abdulmutallab was much of an engineer. I'll give him an A for ingenuity for smuggling his bomb on board, though even that may be debatable due to the pathetic security apparatus of the U.S. Nonetheless, since his bomb failed to explode and destroy the planeload of people it was designed to kill, I'm afraid I'd have to give him an F on that part of the assignment. Overall, I'd have to flunk engineer Umar Farouk Abdulmutallab on his initial engineering endeavor.