My son was there that day. He was one of the “Elite” runners and was sitting in a bar having a beer when he heard about the carnage. He is (among other things)a trained paramedic. He raced back to the finish line to offer assistance. I and my daughter-in-law spent several frantic hours trying to contact him. He finally called us from one of the hospitals in Boston. He was fine,but the lady he aided was injured.
It was a long day for us.
I can imagine it was a long day for you and the wife.
Glad your son wasn’t injured and congrats to him for aiding the injured.