Required For Applicants That Have Been Accepted Into Apprenticeship Apprentices must be able to pass pre-indenture and random hair follicle drug testing. Apprentices are required to have CDL Class A permit completed and medical card upon arrival for training. Mechanics and Service Oilers are required to have the minimum necessary tools (based on list provided) upon arrival for training. Mechanics and Service Oilers must obtain and provide proof of successful completion of Hazardous Materials background check. Mechanics must own a laptop for supplemental training (NOT MAC compatible).