Trench discipline, shoring, having an underground crew that’s tight and everyone knows their task and goes about getting it done! I’ve done every phase from laborer mudding inverts on big and small RCP pipe, building manholes, laying pipe, cutting up transite pipe back in the day with a chop saw and no mask, water or ear plugs! Back before I knew better! Checking and setting grade for a big crew of excavators when I worked at Kiewit as well as running every piece of equipment on a job site and the job itself eventually.