The notices to American pilots were posted on April 23.
The aircraft maker said it will "provide whatever assistance is requested by authorities."
The man apparently had a medical condition, officials say.
On July 16, 1969, Apollo 11 lifted off on the mission that put men on the moon 4 days later.
Herb cutters, garlic presses, even an eight cherry pitter, Cooks Corner and a kitchen gadget for everything.
The White House says it cannot confirm reports the plane was shot down.
Outagamie County chooses not to bill sentenced inmates for their jail stay, labeling it a "philosophical approach."
American intelligence authorities believe a surface-to-air missile brought the plane down but were still working on who fired the missile.
Rides on the World War II bomber are available.
Town of Campbell Police Chief Tim Kelemen was charged with one count of unlawful use of a computerized communication system.