Thomas Hammoor, president and CEO of Textron Aviation Defense, said in a statement that the Royal Thai Air Force selected the Beechcraft AT-6 to conduct a broad array of missions in support of border security as well as anti-smuggling, counternarcotics and anti-human trafficking operations.
This is basically the same aircraft Coast Guard aviators train on before they get their wings, but with upgrades. I can’t help but think something like this or the similar Embraer A-29 Super Tucano could handle a lot of ISR missions more economically than what we are using now.
They could be used to scout for D7 Webber class FRCs doing drug or migrant interdiction and provide shots across the bow and over-watch in lieu of a helicopter.
The Washington DC air intercept mission in particular comes to mind. Local searches for overdue boats is another possibility. As you can see these aircraft support integrated electro-optical sensors.
Armed, these could also provide a response to terrorist attacks. My earlier ramblings on Coast Guard aircraft missions here.