Yes. Many times even with NON emergency, you need clearance letter to fly after certain treatments. Every situation is different and again, it depends on the hour of the day, services available...we make the best plan we can! If it is questionable or there may be any delay...I always suggest a trip to hospital (depending on the day/time and who is closest one open!) In this case it was Plan A- go to hospital for quick service/evaluation or wait to go to Dr Grant when Ultrasound was open at 4pm....a time delay can eliminate the need of a flight out, like this situation. I know a hospital visit isn't what people want, but I will always tell you when I feel it may be needed in the end!! Nurse Beth