Page:Glacier Northwest v. Teamsters.pdf/15

12 Glacier alleges that the drivers’ conduct created an emergency in which it had to devise a way to offload concrete “in a timely manner to avoid costly damage to [its] mixer trucks.” App. 72. The Union’s actions not only resulted in the destruction of all the concrete Glacier had prepared that day; they also posed a risk of foreseeable, aggravated, and imminent harm to Glacier’s trucks. Because the Union took affirmative steps to endanger Glacier’s property rather than reasonable precautions to mitigate that risk, the NLRA does not arguably protect its conduct. We reverse the judgment of the Washington Supreme Court and remand the case for further proceedings not inconsistent with this opinion. It is so ordered.