Idaho Helo Callsigns

[FreqScout2]

I am listening to LiveATC for the Houston area and keep hearing the tactical call signs starting with "Idaho". I am aware of what the "Omaha" units are but not the Idaho units. Can anyone enlighten me?

 

[freqhopping]

Special mission federal law enforcement, typically FBI.

 

[FreqScout2]

Thank you, sir!

 

[ericcarlson]

Idaho callsigns are used by local aircraft on federal-related missions. Idaho 43 is used by DPS N243TX for example.