It's just minutes into their shift when paramedics Ian and Gareth are called to their first patient of the day.
They know that the person they're going to is coughing up blood. They don't know whether that patient has coronavirus.
For weeks, Covid-19 has dominated their working life. They've visited patients who've been seriously ill with the virus. They've also been called to people who've mistakenly thought the ambulance service could offer them a coronavirus test.
A few weeks ago, Ian himself tested positive for Covid-19.
Gareth said: "We're unable to socially distance in the ambulance and working together and we have been to the same patients, we have been in the same environment and unfortunately he has picked it up.
"I don't know whether it's luck or whether I have had it asymptomatically I just don't know."
Although PPE has always been part of their job - the paramedics now have to factor in a completely different level of personal protective equipment.
Each of them has their own kit, including a visor and protective suit. And after every time they transport a patient to hospital, the ambulance itself must be sanitised.
By 10:32am Ian and Gareth are on to their next job. This time it's to a patient who's had a seizure.
Adrian Burman has MS and other complicated medical needs. His family are used to him needing regular hospital visits but at the moment, they're unable to go with him.
You can see more on this story in Wales This Week: Coronavirus - Our Changing Nation on ITV Cymru Wales at 7pm on Thursday 21 May.