Page "The Rock (film)" Paragraph 7

As Mason uses his unique experience to escape from their cells, he reveals why he was held there for so many years — for stealing a microfilm of the United States ' most closely guarded secrets, including the Roswell UFO incident and the John F. Kennedy assassination ( Womack revealed this to Paxton, earlier ).

Mason states he didn't return it, because he knew the FBI would " suicide " him, if he did.

While Goodspeed and Mason search for the final two rockets, Hummel fires one of them but changes the coordinates at the last second causing the rocket to crash harmlessly out to sea.

Facing Captains Frye and Darrow's ( Gregory Sporleder and Tony Todd ) frustration, Hummel explains that their bluff failed and that he refuses to harm innocent civilians.

He orders them to exit Alcatraz with a few hostages and the remaining VX rockets to cover their retreat, while he'll stay, personally assuming blame.

Realizing that they will not be paid their $ 1 million apiece, Frye and Darrow, along with Sergeant Crisp ( Bokeem Woodbine ), decide mutiny against Hummel and his second-in-command, Major Tom Baxter ( David Morse ).