8
You're teaching on deck.
A student suddenly looks like they are
in severe respiratory distress.
There are 25 other students.
What would you do in this situation
(you are at an outdoor pool and the nearest phone
is in the office 150 feet away)

I would follow the emergency action plan as defined by the facility management. No-one should teach at an aquatic facility without knowing the procedures for emergencies. The 'severe respiratory distress' could be several different things - asthma attack, heart attack, anxiety attack. You wouldn't know for sure, so you would have to stop class, get this person to the edge of the pool, and/or out of the water, and send someone from your class to the phone. Severe respiratory distress could well require a 911 call.