They kept him overnight for observation and decided to do an angiogram this morning. Alex and I left the hospital around 2:00. Mom said she got home around 3:00 AM.
Dad called the house around 9:00 this morning and was already up and showered. I'm at work right now but I'm expecting by now Mom has already gone and picked him up from the hospital.
Details pending, but feel free to call home as I'm sure Mom has a lot more details by now.