Kathy, have you thought of making a video yourself using aquarium tubing and a regular syringe, instead of the red feeding tube with the catheter-tip syringe? Many people in an emergency situation or on a holiday can get the aquarium tubing and regular syringes quickly at Walmart and the feed stores..Read this thread, the threads in it and watch the videos:
https://www.backyardchickens.com/t/805728/go-team-tube-feeding
-Kathy