system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel Comics/MCU] What happens if local law enforcement gets to the scene before S.H.I.E.L.D?

What stops the local police from making their way to a location before S.H.I.E.L.D gets there? What happens if they make it there after S.H.I.E.L.D? Do they just kick them out? Pull rank in the government somehow?
gpt
Shield monitors police lines, so when something unusual or superpowered is being reported to the police they know.

Police may still arrive sooner on scene, but shield would have jurisdiction over the extraordinary cases. Shield could also contact the police and tell them to back off if somethings dangerous for them to respond to.

This is before Winter Soldier when they still had authority though.