Leighton sees the tipsheet as an opportunity to learn how to foil the militants, since they have now tipped their hand.

CNN: Militant tipsheet: How to avoid drone strikes

The Associated Press reported finding a printout of the tipsheet in the African nation of Mali, in the aftermath of recent fighting that pushed back militants there.

CNN: Militant tipsheet: How to avoid drone strikes

The tipsheet advises militants to hide under thick trees, stay in the shadows, cover up their vehicles, stay away from their parked cars, hold meetings indoors, and avoid using cell phones.

CNN: Militant tipsheet: How to avoid drone strikes