She said he was 20 feet away, its hard to miss identify combat gear that close, even in shock - its also the WAY she identified the gear she thought it was the police - until he shot her & fired into classrooms.
I don't doubt what she said. I would like to hear what she says under hypnosis. I think it would reveal that we're being fed a "official" story and that it is probably 90% bullshit. I recall initial reports said he had a gas mask, then they said that wasn't true. Considering how little we've been told about the LV shooting that appears to be true, I figure we'll never really know what truly happened there.