<Snipped for focus>The agents weren’t conducting an active operation at that moment; they were waiting for a warrant.
Do you have a link for that? I haven't seen either of those two statements reported in the MSM media.
As far as we know, the agents were conducting an active operation even if we don't know who and where their targets for that day were. And I haven't seen it reported anywhere that they were waiting for a warrant. But even if they were, that's evidence that they were still conducting their operation.