I also hear that Panther micro manages you and calls you constantly while under load, if you stop for a break...some people like this, some don't
The only time Panther did this to me was when I was carrying a "Spotlight" load where the customer dictated direct delivery, logged into Panther's site to monitor my progress, and called Panther to ask why I stopped. Panther told me for those loads you should be proactive and call Panther to let them know when you're stopping, the reason for the stop, and how long you're stopping for.