where at

where に　at がつくと位置を特定する感じがよく出ます。1:06 where is he at? で、彼の現在地は？

http://www.youtube.com/watch?v=SNEly5mP8dU 0:38 so where is the autopilot at? で、自動操縦ボタンはどこにあるんですか？
http://www.youtube.com/watch?v=dXwR4kjTv9Y 0:32 where is he at? やつはどこにいる？
https://www.youtube.com/watch?v=Z7J0Df6SLHc  0:02 this is where I went to school at.ここが私の通っていた学校。

0;37 where do you need help at?

Hear Mom's Chilling 911 Call After Husband Kills Teen Daughters and Himself

参考リンク
http://bridge-english.blogspot.jp/2012/07/london-is-where-its-at.html London is where it's at

練習問題解答
a-6890 where are you at
a-8397 where my head's at