And to the "TrackCoach" who claims Jim Ryun "clearly" choked in 1968: Patently untrue.
To save myself the work, I'll just cut-and-paste from Wikipedia: "Having completely recovered from mononucleosis in the spring of 1968, he won a silver medal in the 1500 meters that autumn in the high altitude of Mexico City, losing to Kip Keino from Kenya, whose remarkable race remained the Olympic 1,500-meter record for 16 years. (Before the race Ryun had thought that a time of 3:39 would be good enough to win in the high altitude of Mexico City. He ended up running faster than that with a 3:37.8, but Keino's 3:34.9 was too tough to beat at that altitude. Years later, in 1981, he told Tex Maule in an interview for The Runner magazine, "We had thought that 3:39 would win and I ran under that. I considered it like winning a gold medal; I had done my very best and I still believe I would have won at sea level." Ryun was attacked by some writers who believed he had let his nation down. "Some even said I had let down the whole world. I didn't get any credit for running my best and no one seemed to realize that Keino had performed brilliantly.")
Keino also had a Kenyan countryman who set a blazing pace, which worked in Keino's favor. Privately, Ryun has expressed some bitterness about this.
Running 3:37.8 at 7,469 feet? That ain't chokin', that's haulin' ass.