Went on a "leaf peeping"tour through central Michigan and wound up at Hartwick Pines State Park.
As I was exiting the vehicle, I heard a strange sound from a distance. listening more closely, I heard the distinct " Bwooopppp" of an A 10 Warthog at nearby Camp Grayling. A lot of tax payer dollars went down range in a few seconds. They must be on high alert.

Lots of recent discussion online here of afterburner roar being heard low level.

This was cannon fire.

Oh, I'm familiar with it. One lighting off directly overhead at treetop level that you didn't hear coming will leave a stain in your drawers, lol.

I was one of the lucky few that got to play with 2ACR digging ditches at Hohenfels and Wildflecken.

My Deer Hunting cabin is just south of Ft Leanord Wood and I can hear that all the time.

A lot of training going on all military installations. There are 2 here that are full with out of state units.

A10s are top shelf when you need them

Build the plane around the gun, then armour the flying eff out of it.
It took me a loooong time to finally procure a shell with a projectile. You guys can get em down there, but not here and I’d have to smuggle it across. After 3 years of poking once or twice a month, a guy in Montreal sold me his last one. $130CA.

To us guys playing in the dirt A-10 drivers are gods. And apache jocks are their avenging angels.

There's a military range and compound at Grayling and active when things warm up someplace.