As a fellow driver I'm going to tell you to look elsewhere.......here's why......brother in law is a pipeline superintendent....kept telling me to get out of the truck and make big money pipelining...ok fine......sold my truck and hit the schools.
Followed his lead and took CPWI....( $2500 ) then went on to NACE ($2500 ) and took OSHA 30 ($200 ) and nothing....nobody hiring including him. So for the time being I have a great tax deduction but that's it.
Credentials may come in handy one day and I do plan to add to them but right now ...zilch. Best I can tell right now looks to stay the same........