A lawyer was livid after he was unexpectedly laid off from his longtime job with a prestigious firm. The next day, he returned to the firm and fired shotgun rounds into the air. Unfortunately, one of the bullets ricocheted off the wall and killed the lawyer’s former secretary. The lawyer later testified, without contradiction, that he had not intended to kill anyone, but simply sought to exact revenge on the firm's managing partner by scaring everyone so badly that they would leave work for that day, thereby causing the firm to miss a critical deadline in a case that the partner was working on. The crimes below are listed in descending order of seriousness. What is the most serious crime of which the lawyer may properly be convicted?