As I recall, Yeager relays a story of Glen being a bit of a putz, landing his plane in soft sand and causing a huge headache in retrieval despite being warned repeatedly. If I remember right that is.
It was Neil Armstrong.
Actually, that was Neil Armstrong...they were arguing over whether a lake bed near Edwards would be dry enough for an emergency landing. Armstrong said that, based on recent weather and his engineering expertise, the bed would be dry enough. Yeager, based on his common sense and years of flying in the area, said it was too wet. Yeager was right and Armstrong was wrong; the plane bogged down in the soft sand and it took quite a while to recover it.