Ballzy: VH is Vacations Hawaii. It is a regular 767 run between Las Vegas and Honolulu. Crews are based in Las Vegas. I think it goes pretty senior.
Foxtroutuniform: The contract says max 18 days. The company cannot publish a bid line with more than that. Some people volunteer all their days off hoping to live a nomad lifestyle, with varying degrees of success.
There are no "long call at home" lines. Just long call. If they don't call when you are home, well then. If they do, off you go.