@Richard65500979@_learnskills Slack action in railroading refers to the free movement (play) between connected railcars before one car transmits its motion to the next.
@Richard65500979@_learnskills Loose coupling is necessary to enable the train to bend around curves and is an aid in starting heavy trains, since the application of the locomotive power to the train operates on each car in the train successively, and the power is thus utilized to start only one car at a time.
Rubio: ”Sweden and Finland have actually contributed [to NATO] because they brought their own defense industry, their own advanced technologies.
So they've been a great partner. They've been an extraordinary partner.”