Hiked up Camels Hump this AM, nice and sunny. Great hike. However, on the way out there was a man that might have been having some sort of heart related problem . When I past him I had no idea there was any problem at all. He was sitting off to the side talking with another gentleman. I thought it odd him sitting there, I said hello to both of them and they both reply with a hello. Again, no indication of a medical problem, he appeared very coherent. I continue down out the Monroe trail, ran into SkiMom. Had a very fast hello then continued. I think I also past Dave M but not sure it was he. Anyway, a young trail running coming up informed me of the medical issue that I had past. Shortly I ran into a rescue team, informed them that they were about 40 mins away. Down in the parking lot a full evacuation team was assembling with sled. Hope all goes well.