Does Southwest Airlines use bulk carriers?
Think slowly and carefully, before giving your answer.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Southwest Airlines requires jet fuel, which is brought in by bulk carrier transport. Southwest Airlines requires glycol for de-icing their planes, which is brought in by bulk transport.
So, the answer is yes.