The program Sponsor agrees: a. To employ the Apprentice to learn the craft or trade described above.The apprentice's Blue Book is considered an acceptable format. After completing the Preliminary Review, the agency will mark, on Page 1, the box for any item requiring follow-up and return the form the to the Prime Vendor. Apply to HVAC Technician, Apprentice Plumber, Apprentice Automotive Technician and more!