Was this a real incident, or fiction?

A family member has told a story for years about an airliner hijacking around 1970 where the U.S. military from Ft. Hood, TX, used machine guns to sever the tail section of the hijacked airliner, rendering it useless and thus ending the hijacking. They say that they witnessed it.

I am guessing from the story that it could have been at any area airport, even as far away as San Antonio, Dallas, or Houston.

I have looked for anything on this several times over several years and haven't found anything on it. Did this really happen, or is it just a made up story to share with and try to impress the family?

Thanks for ANY information.