If something or someone mitigates a risk, they make the effect | ✈️Aviation English

If something or someone mitigates a risk, they make the effects of a loss or risk less unpleasant, harmful, or serious.

E.g.

Airport authorities try to MITIGATE THE RISK of bird strikes with the use of bird scaring techniques such as broadcasting of bird distress signals or firing of pyrotechnic bird scaring cartridges.