請教Frank Tripp的職務。 - CSI

維基有很清楚的解釋。
（有人說以下有雷？但是無害，請自己斟酌往下看。）

It is revealed in the season six premiere that Tripp has been promoted to
sergeant. He also has shaved his head which was revealed at the beginning of
season 6. But on December 10, it is shown that he has finished his patrol
rotation, and has been transferred back to homicide.

來自：http://en.wikipedia.org/wiki/Frank_Tripp

他現在是「升官」加上「輪調到巡邏員警」。
如果調回刑案組，應該就會脫掉制服了。

※ 引述《yukiN (長門有希‧出征！)》之銘言：
: 因為之前錯過大約一季，
: 這季再看到他就發現他已經剃光頭而已變成制服員警了，
: 這集還淪落到要押解犯人，
: 請問是發生什麼事啊？
: 還有，小郎是又發生什麼事？
: 為什麼被停職了？

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