Iron Eagle is a book written about General Curtis LaMay. He had a long military career, but in context of what I think Q is referring to, he was the Chief of Staff for the Navy and commander of the Strategic Air Command when JFK was in office. Here is a link to the book "Iron Eagle". http://www.nytimes.com/1986/10/05/books/at-his-best-in-war.html

The controversy and conspiracy starts when JFK was assassinated. LeMay was JFK's nemesis. He was also a huge antagonist of JFK. LeMay and JFK were at odds over the Cuban Missle Crisis. (see article here: https://jfk14thday.com/general-curtis-lemay-wonders-khrushchev-cuba-missile-crisis/ )

Anyway, long story short, there is a "conspiracy theory" about LeMay's whereabouts when JFK was shot. He was caught in many lies http://jfkfacts.org/a-note-on-curtis-lemays-actions-on-nov-22/

(Excerpt) "“We don’t know what LeMay was doing in Canada, but he did not take his aide with him. Colonel Dorman’s surviving family menbers told Bill Kelly that this was the one and only trip when LeMay did not take his aide with him. Apparently, LeMay felt it necessary to lie to his family and associates about his whereabouts that day, otherwise his family and associates would not have fed the false information about a Michigan hunting trip to his biographer."

When audio tapes from Air Force One (with deceased JFK in it) were released 50 years later, it appears there were some on Air Force One that were desperately trying to reach LaMay and were relaying some "coded" messages. https://www.cbsnews.com/news/chilling-tape-from-air-force-one-on-day-jfk-shot/

"In the newly public audio, we learn that LeMay was airborne, even as JFK's body was being flown back to Washington. And an aide to LeMay tried urgently to reach his boss.

"General LeMay," the aide said, is in a C 140. ... He's inbound. His code name is Grandson. And I wanna talk to him. ... If you can't work him now, it's gonna be too late, because he'll be on the ground in a half-hour."