YOU SAID:

Guard might get nervous, man approaches with his weapon drawn...

INTO JAPANESE

ガードは神経質になるかもしれない。

BACK INTO ENGLISH

The guard may become nervous.

INTO JAPANESE

ガードは緊張するかもしれません。

BACK INTO ENGLISH

The guard may be nervous.

INTO JAPANESE

ガードは緊張しているかもしれません。

BACK INTO ENGLISH

The guard may be nervous.