[Blue Jays]

"...troll..."

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You are both absolutely 100% correct.
That poster consistently posts from a non-Conservative stance.
Observed in many, many, many FreeRepublic threads.

[Blue Jays]

"...walking the dog..."

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First things first. Likely the best plan for the dog walker would have been to holster her sidearm and mobile phone before taking her pet for a walk.

Once outside with her dog, she should have exited the property and ensured the gate completely locked behind her.
If she saw a stranger trying to gain access without a fob/key/swipecard she could plausibly pretend like she did not live there and call the appropriate resource.

In my workplace allowing someone to “coat tail” through a secure area is a terminable offense. She could have found easy ways to not even be in that situation at her home.