Https://schieffercollege.tcu.edu/stratcomm/wp-content/uploads/sites/6/formidable/10/1%E2%86%92866%E2%86%92231%E2%86%924032-southwest-airlines-check-in-step%E2%86%92by%E2%86%92step.pdf https://schieffercollege.tcu.edu/stratcomm/wp-content/uploads/sites/6/formidable/10/1%E2%86%92866%E2%86%92231%E2%86%924032-southwest-airlines-check-in-step%E2%86%92by%E2%86%92step.pdf