Interfacility transport. The company transport patients from one facility to another, usually planned and non-emergent.
In some places IFT and private are the same thing. In some places you might have one private service who does IFTs and another private service that does 911. You'll see a lot of the CA guys just say private and what they really mean is IFT companies.
And hours and pay can vary by city, by state, or by region