From NACs website:
Effective 04/04/2011, Faxed or paper applications will no longer be accepted for new applicants. If you would like to apply for employment with Northern Air Cargo, all applicants are required to apply online using our secure
job board. (Will launch in a new window.)
A bunch of FO positions on there. Only stated mins are ATP, although as has been said if you're not an Alaska guy already your chances are slim to none.