officer down

警察官がやられた、撃たれたくらいの意味です。0:13 This is detective Alex Murphy – officer down. こちらはマーフィー巡査だ。警官が撃たれた。

https://www.youtube.com/watch?v=XoomvWXunRc  1:24 agent down. ボンドに命中しました。
https://www.youtube.com/watch?v=MZhNDpll2Vg  2:55 we've got an officer down in here.
https://www.youtube.com/watch?v=UwdtCv6MBj8  1:55 we have an officer down.
Philadelphia officer ambushed by gunman citing ISIS

0:51 officer down, officer down. 警官が被弾

Opinion | 'Even as a strong supporter of the Second Amendment, I have a red line.'

参考リンク
http://bridge-english.blogspot.com/2019/08/missile-away.html   missile away ミサイル発射完了

練習問題解答
b-2053 the downed aircraft
b-2062 agent down