Some people in the aviation industry might argue that this month came in like a lion and is also going out like one.

Perhaps the biggest news of the month, but certainly not the most surprising, is that Boeing CEO David Calhoun and two other airline manufacturer executives announced their resignations.

And perhaps no airline was more snakebitten than United Airlines.

But the scariest thing might be coming home to find a letter from the Federal Bureau of Investigation.

Here are a few of the standout headlines from the last few weeks.