TAG aviation has their USA headquarters in SFO. They operate a charter and management company for a large number of corporate clients in the United States and EU. Not sure how many planes they operate however I do have a couple friends that work for them. Their planes are scattered all over the country and the crews stay with the planes. They do allow contract work however it would be very helpful if you had a lot of experience in one of the planes they contract in. I also understand that they do not allow the contract pilots to manipulate the controls with passengers aboard ??? Great company otherwise. Look them up on the Internet. Hope that helps a little?