Volunteer EMTs are many Long Islanders’ first interaction with the healthcare system. That’s a point of pride and concern during the coronavirus pandemic which is sickening so many frontline medical workers. Episode 10 of “Life Under Coronavirus” is a visit to the Massapequa Fire Department’s ambulance bay, where a crew of EMTs talks about bringing patients to plastic-draped emergency rooms that look like the moon, and how everything has to be considered a COVID call: “so every call is stressful now.”