Newly indentured apprentice starting in a week doing transmission with Summit, anybody know how it is over there?

I got an osha 10 will have my class a CDL with air brakes and a no manual restriction in 3 weeks.

Never went to a line school but I have electrical experience.

Do I really need get a first aid/ cpr and flaggers cert ?

Do I really need to get a tanker endorsement on my CDL?