Airbag Light stays on, what's up

This is certainly a question for "FordTech" but I wonder if anyone else has this happening. Just recently the dash Airbag light continues to be illuminated after the car is started and all the systems cycle through. Like I said, all the lights come on when the car is first started and actually the airbag light goes out after the sequence is complete, but them it comes back on and stays on. Is this a warning, error or just a nervous tick. Your thoughts ????