I have read that you do not need to resign your seniority number if furloughed from an airline, but I wanted to know do you have to sign a training contract?
Also could someone explain how the reserve system works? I know it's 18 days on but how many days in a row before days off. Is it possible to commute to this type of reserve system? How long does reserve last?

do a search. there is a ton of goodinfo on nja. if its not here its on jetcareers

All new hires are on the 18 day schedule. Usually it is 5 or 6 days on the road, then 4 or 5 days off. They post a forecast schedule a couple of months ahead of time, then the firm schedule the month prior. You will get 4 "H" days (mandatory days off ) per month that you can place anywhere. Minimum time between tours is 3 days.