Over the years mostly treasury then navy dept I think in WWI and WWII
Then treasury and transportation then most recently DHS
Kind of a red headed step child..... from parent to parent
I think they did see some action in wartime even in Indochina
On the seas I always thought of them as like highway patrol with bigger guns
Cannon even....likely have drones now too..
yes, they conducted Operations from 65 to 73 in Vietnam.