14 on, 7 off.  Typically fairly short call outs, so you'd be best off living near one of their bases, or plan on have a crash pad there.  If you're not typed in one of the planes they have, plan on paying for the type at their corporate rate, and they'll repay you over a 2 year period.  They tend to specialize in 1 way trips, so you might be spending some time in a hotel waiting to have a trip home sold.  Their pay tends to be below NBAA average.  One man's trash is another mans treasure, so I'll leave the subjective judgements to you!
RR