[MediaMole]

The woman in red is on the President's detail. I remember seeing her in photos from the election campaign.

Reading through the posts, the most likely scenario is this.

As the President arrives, the outside team handles security while a team waits inside. The President is to be accompanied into the building only by the head agent. As they head inside, the agent is blocked by Chilean security.

President goes out to retrieve the head of his detail.

Having dealt with the secret service on several occasions, they are consummate professionals. Whatever happened was the fault of the Chileans, no question.

[nw_arizona_granny]

Having dealt with the secret service on several occasions, they are
consummate professionals. Whatever happened was the fault of the
Chileans, no question.

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It has always been my impression that the Secret Service was the best of the groups.

Your entire post makes sense to me, thank you for posting your thoughts.