Lucky that he could get to a hospital right away. If it is his heart, he’s in the right place to get the best immediate treatment.
Yup, rapid response is very important. if he has a mjor vessel occluded the sooner they open it the less damage to the heart muscle. I know Cath Labs inside and out, I install them for a living and I've been on the table a few times myself.
Praying they can fix him in the Cath Lab, bypass is much more invasive and takes time to heal.