victor soto, a project coordinator who went through the college, says the depth of training he received helped build a strong bond with clients. >> i want them to trust us, to come to us for anything in general. anything nov related, twlooer to help. >> reporter: the training program success is not without some draw backs. >> it can be hard to keep them. one of the things that we do, we ask each of these new employees to enter into an agreement with us. >> reporter: the agreement is, trainees stay on the job for three years or repay nov the estimated $70,000 it took to train them. if they stay they're paid to attend classes and get a raise once they're in the field. >> we typically start in the 50 to $60,000 per year range, and then after they leave the tech colleges and move out into the workforce at nov, their total compensation can approach six figures. >> reporter: n ov spends $50 million each year on training. and investment returning a steady flow of skilled workers to fuel its growth. in houston, texas, i'm mary thompson for "nightly business report." >>> and for more on how nati