well there is also the DEA, they do have few (130+) planes in TX and all over the place, tiny problem with those guys is the fact you have to be a narc for couple of years before you make it to the aviation side, and hopefully you'll be stll alive by then...
now i did apply for that but was rejected for 'abnormal color vision' and they do not have any exceptions, while on the FBI's website i found that there is an alt. test for color vision which i feel very confident i can pass ... by the way i do have a first class med.