Denton County Area Code Question

[aguyindallas]

The other night on my way home, I was scanning the Denton County area. There was an officer asking dispatch if there was either an HGN or SFST officer on duty. It sounded like whoever this coded officer was would be "certified" in something, but not certain.

Any ideas?

 

[UPMan]

SFST = Standardized Field Sobriety Test
HGN = Horizontal Gaze Nystagmus

Both are related to suspect DUI.

 

[aguyindallas]

Thanks.

That makes perfect sense and I had a suspicion the officer was on a DUI call, just was not 100% sure.