not meaning to split hairs but the J means i'm more tactical than strategic. i have to be in the midst of engagement with the problem to get solutions, and i get them quickly. this is the difference between perceiving and judging. you can't be tactical without making split second decisions.
strategic: planning before action
tactical: adapting the plan during action
from the word "tactile" meaning to touch.
everyone lauds the generals and their elaborate plans but they always go wrong when being implemented and it requires people with a talent for tactical adaptation to actually finish the job. so, in the engineering pipeline, i'm the one who is cutting the pieces up and discovering the plan left out something, and ad-hoc adapting the stuff in order to make it actually work.
fortunately, this is something that field commanders (or team leads) understand so good ones leave their engineers to express their on-the-fly tactical modifications to plans. it's tricky because being good at tactical operations can make you a bit cocky and if you don't keep the spirit of the plan in your mind you can really cause trouble.