The FAA is crediting the quick thinking of two Boston Center controllers with preventing a pilot from being disabled by hypoxia. Rosilla Owen and Scott Elms were working the Stewart Sector west of Boston when New York handed off a Cessna 310 on a photo mission at 13,500 feet. Owen said she noticed the pilot wasn't as responsive as most pilots are in that congested airspace and asked if he was OK. She asked him if he was on oxygen, and he replied that he was but his performance didn't match the level of experience he had as a pilot.
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/controllers-credited-with-hypoxia-save